Overview

The Molltto Ethernet Coupler 10Gbps RJ45 Inline Coupler Female-Female Black 5-Pack is a simple way to join two ethernet patch cables end to end when your wall drop or floor run comes up short. Instead of re-running cabling or buying a longer pre-made cable, you can insert two male RJ45 connectors into this female-to-female coupler and cover the missing distance.
Gold-plated contacts and a shielded aluminum-alloy shell keep the link stable, with support for up to 10Gbps in ideal conditions. The coupler also passes PoE and PoE+ power, which makes it useful for IP cameras and access points where a separate power adapter is inconvenient. Five units per pack means you can fix multiple network points in one go.

Connectivity & Compatibility

  • Connector type: RJ45 female-to-female inline coupler.
  • Supported cable categories: Cat8, Cat7, Cat6a, Cat6, Cat5e, Cat5.
  • Data rate: rated up to 10Gbps; real-world throughput depends on cable quality, total length, and the connected devices.
  • PoE: passes PoE and PoE+ (802.3af/at) without external power.
  • Extension distance: joins two cables for a total run of up to 100m (about 328 feet).
    Routers, switches, PCs, game consoles, IP cameras, VoIP phones, and access points can all sit on either side of this coupler as long as the final cable run stays within Ethernet distance limits. It is a purely passive part, so there is no driver, configuration, or power supply to manage.

Product Info

This is an entry-to-mid tier networking accessory sold by Molltto through major online retail channels. The black 5-pack configuration targets home users and small offices that need multiple quick fixes without buying a roll of bulk cable and crimping tools. Reference price at the time of writing is ￥11,288 for the 5-pack, including tax. The package contains only the couplers themselves, so you will need two ethernet cables with male RJ45 connectors on hand.
There is no confirmed official release date, but the product remains available for purchase as of 2026. Warranty details are not clearly disclosed on the product listing, so check with the seller before buying if warranty coverage matters to you. Compared with wall-plate couplers or keystone jacks, this inline design wins on simplicity: push both plugs in and the job is done, no tools required. That is why its market position is best described as a practical, budget-friendly extension accessory rather than a high-end network component.

Best Use Cases

  • Renters and office workers who often rearrange furniture: You can extend an existing wall drop with a short patch cable instead of drilling new holes or leaving cables draped across the room. This fits because the coupler reuses whatever cables you already own. If you need a permanent, tidy installation, a single longer cable will look cleaner and remove one potential failure point.
  • Smart-home users adding IP cameras or access points: PoE/PoE+ passthrough means the same cable can carry data and power to a ceiling-mounted AP or outdoor camera without a separate adapter near the device. It fits because the coupler is rated for PoE and needs no power of its own. High-power PoE++ devices should be checked against the coupler's ratings first.
  • Gamers and PC users with a short cable after moving: Two loose patch cables become one usable run, so you can reach the router from a desk across the room. This fits because the 5-pack spreads the cost across multiple rooms. For a 10Gbps NAS or workstation that runs flat out, a single dedicated 10G-rated cable is the safer choice, since adding any connector increases signal loss.

Product Disclosure (Amazon)

  • Manufacturer: Molltto
  • Seller: World Import ANアマゾン店
  • Fulfilled by: World Import ANアマゾン店
  • ASIN: B0GX5BHK63
  • Note: This article covers a manufacturer-made product based on Amazon listing details.