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
Silverstone ECD01 internal USB 2.0 to dual RS232 adapter with two DB9 ports

Silverstone Technology

Silverstone ECD01 USB 2.0 to dual RS232 data adapter

SKU CH-A3XF-V75A7

Adds two RS232 serial ports via an internal USB 2.0 header with jumper-selectable 5V power and 1024-byte FIFO buffers

  • TypeATX Mid Tower
  • Adds two serial ports via a single internal USB 2.0 header
  • Jumper-selectable 5 V power on each DB9 connector
  • Hardware and software flow control for reliable links
  • 1024-byte bi-directional FIFO buffers boost throughput
  • PL2303GC chipset handles the USB-to-RS232 conversion

Internal USB 2.0 bridge for dual serial ports

The Silverstone ECD01 converts a single motherboard USB 2.0 9-pin header into two DB9 RS232 connections. It targets system integrators and legacy hardware operators who need to add classic serial interfaces to modern boards without occupying external USB sockets. The adapter draws bus power and fits inside standard ATX mid-tower chassis.

Dual RS232 ports from one internal header

The decisive specification is the provision of two independent RS232 ports driven by a PL2303GC bridge over a single USB 2.0 connection. Each port supports hardware and software flow control and is backed by a 1024-byte bi-directional FIFO buffer for improved throughput. A jumper allows optional 5 V power output on the serial connectors for peripheral supply.

Jumper-selectable 5 V power on the DB9 pins

The bundled jumper block lets builders enable 5 V on the RS232 ports to power external serial devices directly from the motherboard header. This removes the need for separate wall adapters when interfacing with older industrial equipment, barcode scanners or console servers. No additional drivers beyond the standard PL2303GC support are required.

Highlights

  • Adds two serial ports via a single internal USB 2.0 header
  • Jumper-selectable 5 V power on each DB9 connector
  • Hardware and software flow control for reliable links
  • 1024-byte bi-directional FIFO buffers boost throughput
  • PL2303GC chipset handles the USB-to-RS232 conversion

Specifications

TypeATX Mid Tower

Questions about this item

Will the USB 2.0 link limit the speed of the two RS232 ports when they run together?

Yes, the single USB 2.0 header shares its bandwidth between both DB9 ports, so combined throughput cannot exceed what that link delivers.

Does the adapter draw power from the USB header or need a separate connection?

It is bus-powered from the motherboard 9-pin USB 2.0 header and includes a jumper to enable 5 V on the RS232 pins when required.

What internal space and header does the bracket need to install?

It mounts in a standard ATX slot opening and plugs into one 9-pin USB 2.0 header on the motherboard.

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.