Overview

The onelinkmore MHF4 to RP-SMA Female Cable is a 25cm pigtail designed to connect the antenna port of an M.2 NGFF WiFi card to a chassis-mounted RP-SMA bulkhead connector. Sold as a 2-pack, each cable features an ultra-compact MHF4 (IPEX4) connector on the card side and an RP-SMA female bulkhead on the antenna side. The 25cm length is ideal for routing inside compact PC cases without excessive slack. Built with 0.81mm coaxial cable, the pigtail maintains 50Ω impedance and supports DC–6GHz frequency range, covering 2.4GHz, 5GHz, and most 6GHz WiFi bands. The package includes two cables only; a WiFi card and antennas must be purchased separately.

Connectivity & Compatibility

These cables are compatible with M.2 NGFF (Key E) WiFi cards that use the MHF4 (IPEX4) connector. Common compatible modules include Intel AX210/AX200, MediaTek MT7921, and Realtek RTL8852BE, among others. They are not compatible with U.FL (IPEX1) or IPEX3 connectors, which are physically different. Always verify the card-side connector before purchasing. The antenna side uses a reverse-polarity SMA (RP-SMA) female connector with a male center pin. This is standard for most desktop WiFi antennas and external antenna cables. Note that it is not compatible with standard SMA female connectors. The cables do not include antennas; you will need separate RP-SMA male antennas.

Product Info

Released around 2018, this product is widely available on at approximately ¥2,400 per 2-pack. Manufacturer warranty details are not publicly listed, but 's return policy applies. The package contains only two cables; no mounting hardware, manual, or antennas are included. Market positioning is entry to mid-range. MHF4-to-RP-SMA pigtails are a commodity item, so the choice comes down to build quality, cable length, and price. At 25cm, this set is shorter than many alternatives, making it well-suited for compact builds where cable management is critical.

Best Use Cases

DIY desktop WiFi upgrade: When adding an M.2 WiFi card to a desktop PC, the included antenna kit often has cables that are too long or the wrong connector. This pigtail set provides the right length and connector type for clean internal routing. Laptop WiFi card replacement: Some laptops require antenna cables that aren't included with a replacement card. The 25cm length is manageable for internal routing, and the MHF4 connector matches most modern WiFi modules. Antenna relocation: To move antennas from the I/O shield to a different chassis position, these cables offer a flexible extension from the card to a bulkhead mount. The 2-pack supports 2x2 MIMO configurations. Not recommended for: Users with U.FL or IPEX3 cards, or those who need standard SMA female connectors. For a complete solution, consider a kit that includes antennas and the card.

Product Disclosure (Amazon)

  • Manufacturer: OneLinkMore
  • Seller: Amazon US
  • Fulfilled by: Amazon US
  • ASIN: B07GTJ163X
  • Note: This article covers a manufacturer-made product based on Amazon listing details.