08-12-2020 07:00 AM. Dell inspiron 660s gaming motherboard upgrade?! 13. Customize. Manufacturer: Dell Computers. 3910 psu uses Dell proprietary 8+4 pin. Summary: Learn how to use and troubleshoot issues related to drivers, Windows, display, input devices, networking, webcam and more on your Inspiron 3891 Desktop. ; Or, click Browse all products to select the Dell product manually. It also lists the max capacity of the 3. 49. The motherboard is using the B360 chipset and supports 9th gen Intel Core processor, and 32GB of DIMM DDR4-2133/2400 memory. Go into setup and enable PTT -- that will get you TPM support. In Store Only. The motherboard is using the H81 chipset and supports 4th gen Intel Core processor, 16GB of DIMM DDR3-1333/1600 memory, and dedicated. Many thanks for the response! This is really helpful. The motherboard is using the B460 chipset and supports 10th gen Intel Core processor, and 64GB of DIMM DDR4-2666/2933 memory. System & Motherboards. It is quite likely your pc has the same DP/N. 50 excluding VAT @20%. Compare. Newegg shopping upgraded ™The problem now is going to be that if it is the motherboard, my Windows 10 system will likely not be able to be re-activated after the MB is replaced. Microsoft announced Windows 11 yesterday. to power up some Dell prebuilt PCs. Description Values. Comparison of Dell Inspiron 3891 against HP ProDesk 490 G2 Microtower. but you can use a 3. 10th Generation Intel ® Core™ i3-10105 (6 MB Cache, 4 Core, 3. 5 to 2. 2 WLAN. 4ghz Bluetooth Dual. Benchmark results for a Dell Inc. 10th Generation Intel ® Core™ i3-10105 (6 MB Cache, 4 Core, 3. 5. Both systems share the same mini tower form factor that can fit a micro ATX and Mini ITX motherboard, a few hard disk drives, and a single full-height graphics card. First Right-click the drive marked as “Unknown” and “Not Initialized” and select the Initialize Disk option. 1. Applications will perform at their fullest with. Motherboards. Find low everyday prices and buy online for delivery or in-store pick-up. The following Dell 8GB ram P/N is what I pulled from a 3891 system spec using genuine service tag. 5-inch hard-disk drive. Both computers, the Dell OptiPlex 7090 M and the Dell Inspiron 3891, were released during the same year - 2021. Safety instructions. Summary: This article details the types of ports and connectors that you can find on a computer. Get parts and accessories upgrades for your Dell Inspiron 3891. 77 in. 6 (652) £579. 2 slot, try clearing BIOS by removing motherboard battery and pressing/holding power button on PC for ~30 sec before reinstalling the battery. Recommended Videos for Inspiron 3891. Wanting on the entrance panel and beneath the hood, you may see a system much like final 12 months’s Inspiron Desktop (3891), with the primary. The Athlon X2 7000, Phenom, Phenom II and Athlon II series are not supported. 3891 Ansell Rd is a 2,220 square foot house on a 8,215 square foot lot with 5 bedrooms and 2 bathrooms. Intel Core i3-12100. Get drivers and downloads for your Dell Inspiron 3891. I purchase 16x2GB DDR 2666 ram, when installing the new ram, I ca. This 6 pin connector powers the motherboard; the PSU's standard 4+4 pin. 00. Lifetime Warranty. the cooler is mounted directly on threaded studs of chassis tray. 0YF8P5: Power Plan: Balanced: CPU Information; Name: Intel Core i5-11400: Topology: 1. 2 SSD to a larger drive. Comes with a Gigabit Ethernet port, built-in WiFi, and a wired keyboard/mouse. Performance on the Cheap: Testing the Inspiron Desktop 3891. Summary: Learn how to use and troubleshoot issues related to drivers, Windows, display, input devices, networking, webcam and more on your Inspiron 3891 Desktop. Browse Community Language EN. Connect the keyboard and mouse to the computer. Comparison of HP ProDesk 490 G3 Microtower against Dell Inspiron 3891. Identifying the correct memory type, the number of modules that are supported on a computer, and the maximum memory that is supported is important to understand before purchasing or upgrading the memory on a computer. 90 GHz) 11th. 60 GHz to 4. Dell Inspiron 3891 Compact Desktop Computer Tower - Intel Core i5-10400, 16GB DDR4 RAM, 256GB SSD + 1TB SATA HDD, Intel UHD Graphics 630 with Shared Graphics Memory, Windows 10H - Black (Latest Model) so although the 3891 B560 bios would probably boot the -k cpu, the motherboard is ill equipped to support it. Dimensions and weight. View: 36. 0Gb/s DDR4 VGA HDMI Micro ATX. Power off, unplug power cord from rear of PC. By the looks of it - M. I wanted to upgrade the ram. Turbo Boost Speed. Memory. Supporto per Desktop e. Be the first to review “DELL INSPIRON 3891-4081SG MINI TOWER DESKTOP INTEL I5-11400 / 8GB / 1TB HDD / INTEL GRAPHIC / WINDOWS. Your motherboard will likely ship with. Recent GPU Compute Results. This home is currently off market - it last sold on April 30,. System Information; Operating System: Microsoft Windows 10 Home Single Language (64-bit) Model: Dell Inc. Then adjust “Virtual Memory” as needed. If you are looking for a system with maximum upgradability, Dell. This article lists all Dell computers that have previously been tested for update to Windows 11 2022 Update (build 22H2) and upgrade to Windows 11, and provides helpful links to learn more about the new version of Windows. The Dell Inspiron 3891 compact desktop computer is engineered with a 10th Generation Intel Core™ i3-10105 processor for fast, reliable performance and an impressive pc experience. com and google search did not turn up a power supply. Modicon Premium PAC_TSXH5724M. 06 in. Dell Inspiron 3891 is a Mini Tower form factor computer. 6GHz) CPU Socket. Compare With. 2. Specifications of Inspiron 3891. Geekbench 6. Dell Inspiron 3891. But the author of the video states that the 1650 will run properly with 260W PSU so a 1050 should be fine and yes a low. redxps630. PowerEdge Hardware General. Just make sure you take it into consideration when planning how much RAM you are going to use. This is the Dell Inspiron Desktop - 11th Gen Intel Core i5-11400. 0. Inspiron 3501, Inspiron 3502, Inspiron 3505, Inspiron 15 3520, Inspiron 3593, Inspiron 5593, Inspiron 3793, Inspiron 3891, Vostro 3400, Vostro 3401, Vostro 3405. 4GHz turbo) Core i3-10105 processor, Intel UHD 630 integrated graphics, 8GB of RAM, a 256GB SSD,. 40 GHz) 11th Generation Intel ® Core™ i5-11400F (12 MB Cache, 6 Core, 2. (QVL) is a list supplied by a system or motherboard manufacturer of parts tested and confirmed by that. ★★★★★ ★★★★★ 4. The motherboard power connector is a 6 pin, not standard 24 pin. ). We are looking at replacing our old with an Inspiron 3881. wipe the hdd data properly (may be any software crash) and install the windows 10 again. Dell's latest Inspiron Desktop (model 3910; starts at $529. Dell Vostro 3681 supports Wi-Fi and Bluetooth combo card with the on-board M. 2 2230/2280 solid-state drive. Besides, there are ways to install the. Differences between Dell Inspiron 3880 and Dell Inspiron 3891. Inspiron 3891 MT Parts & Upgrades | Dell USA. Sign In Upload. 99 within the mannequin we examined) is an ready funds desktop well-suited to the every day wants of the common residence person. Space-saving exterior: Our latest Inspiron compact desktop is designed to be space-efficient to compliment your work from home setup or office environment. DIMM,8GB,3200,1RX16,16,DDR4,NU. 3881 motherboard can work with 3060 or up if psu is powerful enough and there is sufficient cooling. Manuals and User Guides for Dell Inspiron 3891. you have validated that moddiy 24 to 6 pin adapter designed for optiplex 3050/3060 also works for Inspiron 6 pin. 99. Press and hold the power button for thirty (30) seconds. Transporting sensitive components. If your motherboard and BIOS. So I want to upgrade my desktop with a gpu, but i need a better psu as currently, I have the 260watt psu with no pcie power. This item is out of stock. Inspiron 3891: Motherboard: Dell Inc. The computer is receiving power and providing power to all the. 40 GHz) 11th Generation Intel ® Core™ i5-11400 (12 MB Cache, 6 Core, 2. as dell has confirmed that this will work with the inspiron 3891 as shown in the image below. The Dell Inspiron 3670 is a pre-built home desktop computer first released in 2019. com. The Dell Inspiron 3880 is a pre-built home desktop computer first released in 2020. It looks similar to a TFX style power supply but no guarantee that a TFX would work. Dell Inspiron Desktops Support Forum. 00. 4GHz turbo) Core i3-10105 processor, Intel. Inspiron 3891: Motherboard: Dell Inc. How to. I have an Inspiron 3891. Only 3 left in stock - order soon. Find many great new & used options and get the best deals for Genuine Dell Inspiron 3891 Motherboard Main Board LGA 1200 Socket YF8P5 0YF8P5 at the best online prices at eBay! Free delivery for many products!. Ascendtech StoreVisit Store. ) Width 154 mm (6. Motherboard Main Board. 3881 motherboard can work with 3060 or up if psu is powerful enough and there is sufficient cooling. 2 WLAN card and socket. The Mini Tower is the largest chassis in the business class desktops segment. 2V • 2Rx8/1Rx8 • PC4-25600. 02 kg. 25 baths property. United States; United Kingdom; France; Deutschland. 86. Inspiron 3891 Setup and Specifications (dell. published 29 September 2021. All specs I have seen for 3891 shows it is. Manage your Dell EMC sites, products, and product-level contacts using Company Administration. 2, PCIe NVMe, SSD 68. Learn how to replace the media-card reader on Inspiron 3891. Dell has been using a ubiquitous proprietary 6 pin 12V only connector on almost all of its recent desktop model motherboards across the board (Inspiron, Vostro, XPS, optiplex). Find many great new & used options and get the best deals for Dell Inspiron 0YF8P5 B560 CHIPSET LGA1200 SOCKET MOTHERBOARD READ /IN1 at the best online prices at eBay! Free shipping for many products!. Dell Inspiron 3650 supports Wi-Fi and Bluetooth combo card with the on-board M. Customise. Manua. Use this guide to upgrade the ram, solid state hard drive, and more. GPU—Discrete. It proves that Dell uses same proprietary white 6 pinout across multiple models from XPS 8940, optiplex 3050/3060/3070/7080, Inspiron 3880/3881 to Vostro. I didn't try to get the rock-bottom cheapest PC that Dell sold, either. 7GHz (4. Update now to fix problems such as frequent crashing, computer shuts off unexpectedly, no audio or no video, or a blank screen on start up. Best Build (Edit with custom PC builder). 6GHz to 4. In any case, if you miss USB ports, you can always purchase a USB hub. One M. Is there a power supply of at least 750 watts available for the. 0YF8P5: Power Plan: Dell The Dell Inspiron 3891 Desktop is a newer system that was released in 2021, while the Dell Inspiron 3880 Desktop was released years earlier in 2020. for 3640 , dell confirmed not support resizable bar Y_Y. Besides video card it can also be used for a second high. See details - New Dell Inspiron 3891 B560 CHIPSET LGA1200 SOCKET MOTHERBOARD 0YF8P5 YF8P5. (Depending on the model. Multimedia & Electronics. Does my PC have it and if so, how do I turn it on? The system likely doesn't have a discrete TPM, but your CPU supports PTT (Intel's CPU-based TPM code). How to replace the power-supply unit on Inspiron 3891. Interface type: SATA AHCI, up to 1. $8. Therefore I need a new case however in. I purchase 16x2GB DDR 2666 ram, when installing the new ram, I ca. inspiron 3891 motherboard | Newegg. Show me how. First, make sure your PC has a slot for an M. We would like to show you a description here but the site won’t allow us. This appears as a string of numbers such as 9-9-9-24. BY Evan Forrest. Before working inside your computer. 2 2280 PCLE Gen 3x4 256GB SSD into Inspiron Desktop 3891 however computer does not detect it. NEW DELL INSPIRON 3891 INTEL CHIPSET B560 SOCKET LGA1200 MOTHERBOARD YF8P5. Hi, I have the Dell Inspiron 3891 i7-10700k 1660 Super. Top Single-Core Results Top Multi-Core Results Recent Results. Would th. 2GB or 4GB Discrete Graphics Cards. This package contains the Dell system BIOS update. Amazon. Right-click the Windows button on your desktop in Windows 10 and select Device Manager. 2 2230/2280 solid-state drive + One 3. SupportAssistWith SSD with Win 10 in M. Both systems share the same mini tower form factor that can fit a micro ATX and Mini ITX motherboard, a few hard disk drives, and a single full-height graphics card. Browse Dell OEM Replacement Parts. You can check your motherboard and BIOS specifications to see if they support Resizable BAR. You must hear an audio jingle. I suppose if you can not DIY custom fans, simply keep the case side panel open and position a desktop fan to blow cold air directly on the gpu will help cool it. Dell Vostro 260 is a Mini Tower form factor computer. 5-inch hard-disk drive. 2 2230/2280 solid-state drive + One 3. Intel Core i3-12100. This is useful for reporting the general status of the computer. 2 2230 (Wi-Fi/BT) slot. My Dell desktop Inspiration 3891 updated the bios today but it start blinking amber 2 and white 5 patterns , which mean invalid memory installed , my memory was Kingston hyperX fury 16gb 2666. I purchased a new 3891 and the CPU fan is louder than I'd like. Dell's. Inspiron 3891 fan replacement. Buy It Now. 90 GHz. It is smaller than the Dell Inspiron 3891 and will fit more easily under your desk. RAM (as Tested) 8. The Dell XPS 8940 is slower by supporting RAM speeds of up to 2666 MT/s. I want to swap out the 4gb one for another 8gb but Dell has MASSIVE compatibility issues with pretty much any part you change. Most of the times, this should be sufficient for the majority of users. I want to get a half decent graphics card like an rtx 3050/60 or a 1650 super. Dell Inc. How to replace the power-supply unit on Inspiron 3891. Download and install the latest drivers, firmware and software. Dell Inc. Both systems share the same mini tower form factor that can fit a micro ATX and Mini ITX motherboard, a few hard disk drives, and a single full-height graphics card. Get drivers and downloads for your Dell Inspiron 3891. Top Single-Core Results Top Multi-Core Results Recent Results. The Dell Inspiron 3910 Desktop is a newer system that was released in 2022, while the Dell Inspiron 3891 Desktop was released years earlier in 2021. 99 in the model we tested) is an able budget desktop well-suited. . Motherboard Main Board. How to replace the M. [ Intel Core i5 Processor ] Released in 2021 The Inspiron 3891 MT Desktop is Dell's latest release in the Inspiron family. Of course missing HDMI port is something that can be easily fixed with a good adapter (e. I was hoping that adding a high quality sound card would improve importing sound from an audio/digital converter I use for recording purposes. 40 GHz) 11th Generation Intel ® Core™ i5-11400F (12 MB Cache, 6 Core, 2. 50 GHz to 4. About your Inspiron 3891. 9CXF2. Electrostatic discharge—ESD protection. 2 2230, PCIe NVMe, solid-state drive. We praised last year’s attractive-looking slant-pattern design, and it makes a comeback here. Laptop motherboard For DELL Inspiron 3521 i3-3227U Mainboard LA-9104P CN-00P6TK SR0XF 216-0833000 DDR3 tesed. In that case, you have two options to upgrade this model with Wi-Fi. Dell Inspiron 3670 is a Mini Tower form factor computer. . Centralized location for key Dell applications, help articles, and other important information about your computer. com: Dell Inspiron 3910 Desktop Computer Tower - 12th Gen Intel Core i5-12400, 16GB DDR4 RAM, 256GB SSD + 1TB HDD, Intel UHD Graphics 730, WiFi 6, HDMI, Bluetooth, USB-C, Windows 11 Home - Blue : ElectronicsThe Inspiron 3891 is a common computer motherboard manufactured by Dell. All these use Dell proprietary white 6 pin connector. ; Select the Operating System. If you are looking for a more modern desktop, then you should go with the Dell Inspiron 3891 which was released in 2021. Since the new operating system (OS) – Windows 11 has come out, a lot of people wonder whether Dell computers (as one of the famous computer manufacturers) are compatible with the next generation of OS, both the old models and new editions. 54 in. Dell Inspiron Desktop systems have a long history of built-in diagnostic indicators. Dell 360w psu (Optiplex XE3, 7070MT, Inspiron 3881, 3891) 360 Watt Power Supply PSU. And if you’d prefer a Dell Inspiron laptop, then check out the current range here: Dell Inspiron 14; Dell Inspiron 14 2-in-1; Dell Inspiron 14 Plus; Dell Inspiron 15; Dell Inspiron 15 Plus; Dell. Inspiron 3000 laptops, for example, often cost less than $500; the Inspiron 15 3511 is one of our picks for best laptops under $500. Saturday my PC decided it wanted to update the bios to v 1. Batteries. Click the System icon. Geekbench 6. This loads the Advanced Boot Menu. touch display Full HD (1920X1080) Compare. Top Single-Core Results Top Multi-Core Results Recent Results. ESD field service kit. D865GLC Motherboard Manual. Inspiron 3891: Motherboard: Dell Inc. One (1) Year Warranty. The part number and model number of that psu is unknown now. 5 ssd to the 3. Meanings of Power Button States. Inspiron 3891 with an Intel Core i7-11700F processor. Guess new one can't show right test result? The original factory operating system had a flaw. Although I need help to figure out if I need to buy an adapter, because I know certain things like the motherboard is proprietary, and I want to remove the cpu vent for a exhaust fan. For non-Dell memory we suggest Crucial as it is guaranteed to work in. If you have any feedback regarding its quality, please let us know using the form at the bottom of this page. Added a video card but the options were very limited due to the 260W psu that it comes with. Find compatible hardware (hard drives, memory, batteries) and accessories (speakers, headphones, keyboards, mice). Drivers & Downloads. 29. 2. 70 GHz to 4. The 3471 motherboard WLAN M. Dell Inspiron 3880, 3881, and 3891 offer similar configurations, which the. Tonight the support assist wanted to do. D865GLC Motherboard Manual. This is the video of my fully upgraded Inspiron 3891 with ID Cooling. If you mean Inspiron 660, first remove discrete sound card, test sound output from integrated audio port at back (light green port between red and blue). The Dell Inspiron 3891 Desktop is a newer system that was released in 2021, while the Dell Inspiron 3880 Desktop was released years earlier in 2020. The first page of the BIOS should show the specific computer model. Click the System Protection tab on the window that appears. Plug the USB flash drive into the computer that you want to flash the BIOS to. Find MyService360 assets. 0 Compliant - 105°C-Rated Capacitors - 80 PLUS Gold Efficiency - Modern Standby Support. now I'm just wondering, since the gtx 1660 super normally needs 6+2 pin connectors,The spec manual for Inspiron 3891 includes the following for Storage: Storage type: Slim optical drive, optional. 0YF8P5: CPU Information; Name: Intel Core i5-11400: Topology: 1 Processor, 6 Cores, 12. There is a Global Headphone port on the front. This version of "dell_inspiron-3891_bios_win11. compare. So I want to upgrade my desktop with a gpu, but i need a better psu as currently, I have the 260watt psu with no pcie power. 3. 4. book Page 1 Tuesday, November 12, 2013 1:54 PM. . All Specs. Press/hold power button for ~15 sec. SATA slots are located on the motherboard and it is where SSD, HDD and Optical Disk Drives are connected. Open Device Manager to ensure that Windows detects the disc. System Information; Operating System: Microsoft Windows 10 (64-bit) Model: Dell Inc. Compatible/Supported CPU: 10th 11th Generation Intel Core i3/i5/i7/i9, Pentium Gold G6405, Celeron G5905 Desktop Processors. 13th Gen Intel® Core™ i7-1355U Windows 11 Home Single Language NVIDIA® GeForce® MX550, 2 GB GDDR6 16 GB: 2 x 8 GB, DDR4, 3200 MT/s 1 TB, M. Wi-Fi Support. As reviewed, the $392 Inspiron Desktop 3891 from Dell. Compare With. After working inside your computer. 40 GHz) 11th Generation Intel ® Core™ i7-11700 (16 MB Cache, 8 Core, 2. The motherboard is using the B460 chipset and supports 10th gen Intel Core processor, and 64GB of DIMM DDR4-2666/2933 memory. Top Single-Core Results Top Multi-Core Results Recent Results. 2 12-01-2023 22:00 PM JOCEAN is spot on again. Case & Motherboard. The motherboard has an unused SATA slot (SATA1), and an empty 3. Inspiron 3891 with an Intel Core i5-11400 processor. diagnostic light may not be reliable. Working inside your computer. 60 GHz to 4. Systems Management General. 0YF8P5: Power Plan: Balanced: CPU Information; Name: Intel Core i5-10400: Topology: 1. 0YF8P5: Power Plan: Balanced: CPU Information; Name: Intel Core i3-10105: Topology: 1. Click the Windows Start Button and type Control Panel and click on the control panel icon that appears in the list. Lowest price on Dell Inspiron 3891 Motherboard No I/O Part Number: YF8P5 0YF8P5 CN-0YF8P5. The HP EliteDesk 800 G2 Tower is older and entered production in 2015. Dell Inspiron 3891 RAM Upgrade Question. Inspiron 3891 came with one HD, the 512GB M. 50 GHz to 4. ). Model: i5410-5843WHT-PUS. The 2022 Dell Inspiron 3910 Desktop features 46W 12th Generation Intel Alder Lake dual-core Intel Celeron G6900 up to a 65W 12-core Intel Core i7-12700F with a boost speed up to 4. Dell Computer Motherboards, Dell Inspiron Batteries, Dell Laptop Motherboards, TouchPad for Dell Inspiron, Bezel for Dell Inspiron,Inspiron 24 All-in-One. Both systems share the same mini tower form factor that can fit a micro ATX and Mini ITX motherboard, a few hard disk drives, and a single full-height graphics card. Free delivery and free returns with a 100% money back guarantee. Preloaded Software. This update addresses Common Vulnerabilities and Exposures (CVE). Inspiron 3891; Inspiron 5400 All-in-One; Inspiron 5401 All-in-One; Inspiron 5477; Inspiron 5490 All-in-One; Inspiron 5491 All-in-One; Inspiron 5676; Inspiron 5680;This video shows how to replace the graphics card on an Inspiron 3891. One is a 4pin 2 yellow 2 black that connector labeled P2 and plugs in on the motherboard where labeled ATX CPU. 90 GHz. Based on the Q&A answer above I bought this as a replacement PS for my Dell Inspiron 560. 99 Special Shipping from United States As reviewed, the $392 Inspiron Desktop 3891 from Dell. Existing RAM that came on the new computer is identified as follows, ADATA, 8GB 1Rx16 PC4-3200AA-UCO-11, 10402742 1. inspiron 3891 motherboard form factor. Power Management. If you are looking for a more modern desktop, then you should go with the Dell Inspiron 3891 which was released in 2021. Used - Like New Dell Inspiron 3891 Intel Chipset B560 Socket LGA1200 Motherboard YF8P5 NO I/O Intel LGA1200 Motherboard. Watch. I. Crucial Memory and SSD upgrades - 100% Compatibility Guaranteed for Dell Inspiron 3891 - FREE US Delivery. Budget desktops often skimp on processing power, but Dell's Inspiron Desktop 3891 doesn’t. 1 port (s) which allows transfer of up to 10Gb/s. Replaced the included 12 gb memory with 2x16 gb sticks. Condition: Open box. Totally confused yet, it can be. 8-in. Inspiron 3891, OptiPlex 5090 Tower, OptiPlex 5090 Micro, OptiPlex 5090 Small Form Factor, OptiPlex 7090 Tower, OptiPlex 7090 Micro,. A lot of 3891 users run GTX 1660 Super (6GB). Dell Inspiron 3668 supports Wi-Fi and Bluetooth combo card with the on-board M. Desktop Dell Inspiron 3891 Service Manual (77 pages) Desktop Dell Inspiron 545 MT User Manual. Dell's. 2 Gen 1 Type-C? port (front) 2 x USB 2. The Six cores on the Core i5. User reset operating system and speed test now report 400. Memory; Storage; Upgrade advice; Maximum memory: 64GB. 2. Case Orientation. . Add To List - Item: B650-P PRO WiFi AMD AM5 ATX Motherboard SKU 507947. exe" is rated (3 out of 5 stars) based on 16 downloads and 4 reviews. 5" hard drives. Differences between Dell Inspiron 3891 and Dell Vostro 3888. Specifications of Inspiron 3880. I received my Inspiron 3891 on Friday 4-15-22. There are different keys to M. the fact Dell has not validated higher capacity oem ram in 3891 is because Inspiron is a mainstream consumer model considered lower class than XPS, thus they do not bother testing higher spec in order to keep price down. 60 GHz to 4.