This article covers イーサネットスプリッター1~2.

Overview

The HRSDEIE Gigabit Ethernet Splitter is a compact network accessory that expands one RJ45 port into two. It supports data transfer rates up to 1000 Mbps and works with Cat5e through Cat8 Ethernet cables. Unlike passive splitters, this unit requires USB power to operate, ensuring stable signal distribution. It's designed for home or small office scenarios where a wall port is scarce and you need to connect two devices temporarily.
Setup is plug-and-play with no configuration needed. Each port has an LED indicator to show connection status. Weighing only 79 grams, it's highly portable.

Connectivity & Compatibility

  • Interface: RJ45 (8P8C) 1 input, 2 output
  • Supported cables: Cat5 / Cat5e / Cat6 / Cat6a / Cat7 / Cat8
  • Compatible devices: ADSL modems, hubs, switches, routers, TVs, set-top boxes, desktop PCs, laptops
  • Power: USB-powered (included USB cable). Requires a 5V USB port. Will not function without power.
  • Data rate: Up to 1000 Mbps (Gigabit)
    This is an active splitter, not a passive one. It amplifies and distributes the signal internally, so USB power is mandatory. Unlike a network switch, it does not have MAC address learning or frame forwarding; it simply splits the physical connection. Both connected devices share the same bandwidth.

Product Info

Released around 2024, this splitter is available on online retailers for approximately ¥3,400. It sits in the entry-level network accessory category. Manufacturer warranty details are unclear, but given the low price, after-sales support is likely limited.
Package contents: the splitter unit, a USB power cable, and a quick-start guide. Ethernet cables are not included.
Market positioning: this is a simple port expansion tool, not a full network switch. It lacks advanced features like VLAN or QoS but offers a low-cost way to add a second wired connection.

Best Use Cases

  • Remote workers needing a temporary second LAN port: If your home office has only one wall jack and you want to connect both a desktop PC and a console, this splitter can help. Be aware that simultaneous heavy transfers will share bandwidth, potentially reducing speed.
  • Travelers or event organizers setting up quick networks: Lightweight and USB-powered, it's easy to pack. In a hotel room or meeting space, you can connect two devices without carrying a bulky switch.
  • Testing or troubleshooting network gear: Use it as a temporary port multiplier when verifying router or switch functionality. Its low cost makes it a good spare to keep in a toolkit.
  • Not recommended for: Environments requiring consistent high-speed performance (online gaming, large file transfers) – a proper Gigabit switch is better. Also not suitable for PoE devices like IP cameras.

Product Disclosure (Amazon)

  • Manufacturer: HRSDEIE
  • Seller: Amazon US
  • Fulfilled by: Amazon US
  • ASIN: B0CX2WRT4F
  • Note: This article covers a manufacturer-made product based on Amazon listing details.