--- product_id: 628207878 title: "BestParts Type-C USB 3.1 Gen2 Port Flex IO Card Small Board Replacement for HP 400 600 705 800 G4 DM MINI SFF MT 3TK78AA" brand: "bestparts" price: "₩129264" currency: KRW in_stock: true reviews_count: 5 category: "Best Parts" url: https://www.desertcart.kr/products/628207878-bestparts-type-c-usb-3-1-gen2-port-flex-io store_origin: KR region: South Korea --- # 15W power delivery (5V, 3A) USB 3.1 Gen2 10Gbps speed Supports DisplayPort 1.4 BestParts Type-C USB 3.1 Gen2 Port Flex IO Card Small Board Replacement for HP 400 600 705 800 G4 DM MINI SFF MT 3TK78AA **Brand:** bestparts **Price:** ₩129264 **Availability:** ✅ In Stock ## Summary > ⚡ Upgrade your HP rig with lightning-fast USB-C power and display — don’t get left behind! ## Quick Answers - **What is this?** BestParts Type-C USB 3.1 Gen2 Port Flex IO Card Small Board Replacement for HP 400 600 705 800 G4 DM MINI SFF MT 3TK78AA by bestparts - **How much does it cost?** ₩129264 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/628207878-bestparts-type-c-usb-3-1-gen2-port-flex-io) ## Best For - bestparts enthusiasts ## Why This Product - Trusted bestparts brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug & Play Simplicity:** No drivers needed—install in minutes and get flawless out-of-the-box performance. - • **Blazing Fast USB 3.1 Gen2:** Experience ultra-fast 10Gbps data transfer for seamless productivity. - • **Crystal Clear Video Output:** Supports DisplayPort 1.4 for stunning 4K+ display connectivity. - • **Power Up with 15W Delivery:** Charge and power your devices efficiently with up to 15W output. - • **Tailored for HP EliteDesk & ProDesk:** Perfectly compatible with multiple HP G4 series models for hassle-free upgrades. ## Overview The BestParts Type-C USB 3.1 Gen2 Port Flex IO Card is a compact, high-performance replacement board designed for HP 400, 600, 705, and 800 G4 series desktops. Delivering up to 10Gbps data transfer speeds, 15W power output, and DisplayPort 1.4 support, it enables seamless USB-C connectivity and 4K video output. Easy to install with durable metal backing and compatible across multiple HP models, it’s the perfect upgrade for professionals seeking reliable, future-proof IO expansion. ## Description SPEC: Add an extra flexible Type-C USB 3.1 Gen2 IO to your DM and Tower Transfer speed up to 10Gbps Interchangeable with other modules Support up to 15w out (5V, 3A) Support up to DisplayPort 1.4HP EliteDesk 800 G4 TWR,HP EliteDesk 800 G4 SFF,HP EliteDesk 800 G4 DM(not 35w),HP EliteDesk 705 G4 DM,HP EliteDesk 705 G4 MT,HP EliteDesk 705 G4 SFF,HP ProDesk 600 G4 MT,HP ProDesk 600 G4 SFF,HP ProDesk 600 G4 DM,HP ProDesk 400 G5 MT,HP ProDesk 400 G4 DM,HP ProDesk 400 G5 SFF . Review: Works great! Sadly I won't need it anymore - I was working on a cyberdeck that used the HP 800 G4 Mini as it's brain and wanted a clean way to power the USB C monitor I had selected. This was the perfect solution and it worked WONDERFULLY. Everything I tried connected without any issues, or even drivers needed, completely flawless out of the box. It was simple to install with only 3 screws (including the case screw). It has a durable metal backing so you won't damage the board itself when trying to install a USB-C cable. These HP add-in cards are also a LOT more affordable and far more available than the competitors. Unfortunately for me I won't be able to use this board anymore as the last part of my project ended up frying the motherboard on my PC :( Totally unrelated to this product tho, I was just being stupid with my power input Review: As described and well packaged - Item was new or like new, well packaged in ESD bag. Came with screws to secure it to the motherboard. Worked great on the HP ProDesk G4 600 SFF computer. I was able to use a USB C monitor with the desktop now, as video would not pass through the front built in port. After replacing the VGA module with this, it worked no problem. You may have to check the bios settings, so don’t despair right away if it doesn’t work right away. Also make sure it is seated properly and that it is secured properly. I had no issues with either and it worked first time. ## Features - TYPE-C Port Small Board Card 3TK78AA Compatible with HP 400 600 800 G4 DM SFF MT. - Compatible P/N: For 3TK78AA - Compatible models: For HP 400 G4 DM SFF MT; For HP 600 G4 DM SFF MT; For HP 705 G4 DM SFF MT; For HP 800 G4 DM SFF TWR - Support up to 15W out (5V, 3A), Support up to DP1.4. - You will receive: 1 x Type-C CARD board. - Warranty: 6 months. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BWDSXXS2 | | Best Sellers Rank | #113,798 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #174 in USB Port Cards | | Brand | BestParts | | Brand Name | BestParts | | Compatible Devices | HP 400 G4 DM SFF MT, HP 600 G4 DM SFF MT, HP 705 G4 DM SFF MT, HP 800 G4 DM SFF TWR | | Customer Reviews | 4.6 out of 5 stars 30 Reviews | | Hardware Interface | USB Type C | | Item Weight | 0.02 Kilograms | | Manufacturer | BestParts | | Manufacturer Part Number | XA.SW.115-F1 | | Model Number | XA.SW.115-F1 | | Number of Packs | 1 | | Operating System | Windows, Linux | | Style | Modern | | Style Name | Modern | ## Product Details - **Brand:** BestParts - **Hardware Interface:** USB 3.1 Type A - **Style:** Modern - **Item Weight:** 0.02 Kilograms - **Compatible Devices:** HP 400 G4 DM SFF MT, HP 600 G4 DM SFF MT, HP 705 G4 DM SFF MT, HP 800 G4 DM SFF TWR ## Images ![BestParts Type-C USB 3.1 Gen2 Port Flex IO Card Small Board Replacement for HP 400 600 705 800 G4 DM MINI SFF MT 3TK78AA - Image 1](https://m.media-amazon.com/images/I/71E1I1AxdnL.jpg) ![BestParts Type-C USB 3.1 Gen2 Port Flex IO Card Small Board Replacement for HP 400 600 705 800 G4 DM MINI SFF MT 3TK78AA - Image 2](https://m.media-amazon.com/images/I/71JRCoeAdAL.jpg) ![BestParts Type-C USB 3.1 Gen2 Port Flex IO Card Small Board Replacement for HP 400 600 705 800 G4 DM MINI SFF MT 3TK78AA - Image 3](https://m.media-amazon.com/images/I/61c32chAk3L.jpg) ![BestParts Type-C USB 3.1 Gen2 Port Flex IO Card Small Board Replacement for HP 400 600 705 800 G4 DM MINI SFF MT 3TK78AA - Image 4](https://m.media-amazon.com/images/I/61TVHU4CmNL.jpg) ![BestParts Type-C USB 3.1 Gen2 Port Flex IO Card Small Board Replacement for HP 400 600 705 800 G4 DM MINI SFF MT 3TK78AA - Image 5](https://m.media-amazon.com/images/I/61mZMyMmWgL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great! Sadly I won't need it anymore *by J***E on 22 July 2026* I was working on a cyberdeck that used the HP 800 G4 Mini as it's brain and wanted a clean way to power the USB C monitor I had selected. This was the perfect solution and it worked WONDERFULLY. Everything I tried connected without any issues, or even drivers needed, completely flawless out of the box. It was simple to install with only 3 screws (including the case screw). It has a durable metal backing so you won't damage the board itself when trying to install a USB-C cable. These HP add-in cards are also a LOT more affordable and far more available than the competitors. Unfortunately for me I won't be able to use this board anymore as the last part of my project ended up frying the motherboard on my PC :( Totally unrelated to this product tho, I was just being stupid with my power input ### ⭐⭐⭐⭐⭐ As described and well packaged *by M***. on 8 September 2024* Item was new or like new, well packaged in ESD bag. Came with screws to secure it to the motherboard. Worked great on the HP ProDesk G4 600 SFF computer. I was able to use a USB C monitor with the desktop now, as video would not pass through the front built in port. After replacing the VGA module with this, it worked no problem. You may have to check the bios settings, so don’t despair right away if it doesn’t work right away. Also make sure it is seated properly and that it is secured properly. I had no issues with either and it worked first time. ### ⭐⭐⭐⭐⭐ Simple Set Up, Works As Advertised. *by A***G on 3 June 2025* Works great in an Elitedesk G4 and an HP Prodesk 600 G3. Install was simple. Using it with a Yottamaster 5-Bay DAS with USB-C 3.1 Gen 2; speeds are really good especially since I am always transferring large amounts of data to/from my HDD's and SSD's. I can send data to 4 drives at the same time and maintain 230-250Mb/s on each. One thing to note if this get stuck at boot, a new option shows up in BIOS, I forget the location but there will be a new checkbox for USB-C firmware update for that flex I/O port. Disable it. Been using this for a while now with no issues. ## Frequently Bought Together - BestParts Type-C USB 3.1 Gen2 Port Flex IO Card Small Board Replacement for HP 400 600 705 800 G4 DM Mini SFF MT 3TK78AA - UGREEN USB C to Ethernet Adapter 2.5G, Ethernet Adapter for Laptop, Aluminum, Type C (Thunderbolt 4/3 Compatible) to RJ45 Network Internet, Compatible for NAS, MacBook Air/Pro, XPS, iPhone 15 Pro/Max --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.kr/products/628207878-bestparts-type-c-usb-3-1-gen2-port-flex-io](https://www.desertcart.kr/products/628207878-bestparts-type-c-usb-3-1-gen2-port-flex-io) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-08-07*