We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black rectangular box with eight DB9 ports and LED indicators

SerialGear

SerialGear 8-Port RS-232 USB to Serial Converter

SKU CH-M8NK-58NVC

Adds eight RS-232 DB9 serial ports through a single USB connection with LED status indicators and 10KV surge protection

  • Adds eight RS-232 DB9 ports via one USB connection
  • Rugged plastic housing with TxD and RxD LED status indicators
  • Surge protection of 10KV on every serial port
  • Baud rates up to 921.6K bps with non-standard rate support
  • Powered by USB 1.1 or 2.0 port with no external adapter required

Eight RS-232 ports from one USB

The SerialGear adapter connects to a single USB 1.1 or 2.0 port and instantly adds eight DB9 serial ports. Each port provides full RS-232 modem control signals and hardware or software flow control. The rugged plastic housing includes LED indicators for TxD and RxD activity. No external power adapter is required.

Baud rate up to 921.6K bps

The adapter supports standard and non-standard baud rates up to 921.6K bps, which determines compatibility with high-speed industrial or legacy equipment. Each serial port is protected by 10KV surge protection. Data signals include TxD, RxD, RTS, CTS, DSR, DTR, DCD, RI and GND.

Plug-and-play Windows COM ports

The device installs as standard Windows COM ports and the assigned numbers can be changed to any required value. Hot-plug capability allows connection without restarting the system. Buyers who need isolated ports or an external power supply for longer cable runs should verify those features are not required.

Highlights

  • Adds eight RS-232 DB9 ports via one USB connection
  • Rugged plastic housing with TxD and RxD LED status indicators
  • Surge protection of 10KV on every serial port
  • Baud rates up to 921.6K bps with non-standard rate support
  • Powered by USB 1.1 or 2.0 port with no external adapter required

Specifications

No published specifications for this item yet.

Questions about this item

What does the 921.6 Kbps headline speed mean once the adapter is inside a real machine?

Each of the eight DB9 ports can run at up to 921.6 Kbps with full modem control signals and hardware or software flow control, and non-standard baud rates are also supported.

Which USB standard does the box use, and what does that cap in practice?

It works with USB 1.1 and 2.0 host ports and draws all power from the USB connection, so no external adapter is required.

What does the unit physically need to fit or mount in a typical setup?

The rugged plastic housing simply plugs into a single USB port and provides eight DB9 male connectors; no mounting brackets or extra cables are mentioned.

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.