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Small black USB dongle with RJ11 telephone jack

STARTECH

STARTECH USB56KEMH2 56K USB V.92 Fax Modem

SKU CH-KW6P-4JNN6 MPN USB56KEMH2

Adds dial-up internet and fax capability to a computer via USB 2.0, supporting V.92 data rates up to 56 Kbps down and 33.6 Kbps up with 14.4 Kbps fax

  • Type56K USB Dial-Up and Fax Modem - V.92 - External
  • ColorBlack
  • SpecificationsTechnical Information Fax Technology: ITU-T V.17 ITU-T V.29
  • DisclaimerCompatibility: Windows® XP, 7, 8, 8.1, 10, 11 Windows® Serve
  • Hardware-based design offloads dial-up and fax tasks from the CPU
  • V.92 support delivers up to 56 Kbps downstream and 33.6 Kbps upstream data rates
  • Fax transmission reaches 14.4 Kbps using V.17, V.29, V.27 and V.21 channel 2 standards
  • Caller ID and voice capability let you make or receive calls through the computer
  • USB 2.0 interface draws power from the host so no external adapter is needed

What this modem does

The StarTech USB56KEMH2 is a hardware-based USB 2.0 dial-up and fax modem that adds a telephone line connection to a desktop or laptop. It targets users who still rely on analogue phone lines for internet access, fax transmission, security panels or point-of-sale authorisation. The external dongle draws power from the USB port and handles modulation without loading the host CPU.

Build and daily connections

A black plastic housing carries a single USB Type-A plug and one RJ11 telephone jack for a standard phone cord. The hardware Conexant controller manages V.92, V.90 and legacy ITU-T standards down to V.21, plus fax classes up to V.17 and T.31 Class 1.0. Voice and caller ID features let the computer act as a speakerphone when compatible software is installed.

Upgrade path and limits

This adapter replaces an internal PCI modem or a missing serial port on modern systems that lack a built-in dial-up interface. It is worthwhile when a V.92-capable external modem is needed for compression (V.44) and faster upstream rates up to 33.6 kbps. Buyers who need broadband speeds, Ethernet connectivity or wireless networking cannot use this device for those purposes.

Highlights

  • Hardware-based design offloads dial-up and fax tasks from the CPU
  • V.92 support delivers up to 56 Kbps downstream and 33.6 Kbps upstream data rates
  • Fax transmission reaches 14.4 Kbps using V.17, V.29, V.27 and V.21 channel 2 standards
  • Caller ID and voice capability let you make or receive calls through the computer
  • USB 2.0 interface draws power from the host so no external adapter is needed

Specifications

BrandStarTech.com
Part NumberUSB56KEMH2
Type56K USB Dial-Up and Fax Modem - V.92 - External
ColorBlack
SpecificationsTechnical Information
Fax Technology:
ITU-T V.17
ITU-T V.29
ITU-T V.27
ITU-T V.21 channel 2
Modulation:
ITU-T V.90
ITU-T V.92
ITU-T V.34
ITU-T V.32
ITU-T V.22bis
ITU-T V.22
ITU-T V.23
ITU-T V.21
Interfaces/Ports
Host Interface:
USB 2.0 Type A
Number of Modem (RJ-11) Ports:
1
Media & Performance
Modem Transmission Data Rate:
56 kbit/s
Physical Characteristics
Form Factor:
Desktop
Height:
0.8"
Width:
1.1"
Depth:
3"
Weight (Approximate):
1 oz
DisclaimerCompatibility:
Windows® XP, 7, 8, 8.1, 10, 11
Windows® Server 2008 R2, 2012 R2, 2016, 2019, 2022
macOS: Fax - up to 10.6.x. Dial-up - up to 12.x
Linux kernel 3.16 and up - LTS Versions only
System Requirements:
Windows® 7, 8, 8.1, 10
Windows® Server 2008 R2, 2012 R2, 2016, 2019
Mac OS 10.9 to 10.10
Linux kernel 3.16 to 4.4 (LTS Versions Only)
Shipping weight0.13 kg
Package size168 × 132 × 36 mm

Questions about this item

What USB standard does the USB56KEMH2 use and what data rates does it cap at?

The modem connects over USB 2.0 and delivers up to 56 Kbps downstream and 33.6 Kbps upstream for data, with fax at 14.4 Kbps.

What physical ports and connectors does the USB56KEMH2 require to fit?

It needs a USB Type-A port on the host and a single RJ11 telephone jack for the line connection.

How is the USB56KEMH2 installed and what step do users often miss?

Plug the modem into a USB Type-A port, connect the phone cable to the RJ11 jack, then install the driver for Windows, macOS or Linux so the Conexant CX93010 chipset is recognised.

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