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The OMNIKEY® 3121 Reader is a high-performance, innovative, USB-connected smart card reader suited for desktop use. Designed with multiple standing options and a robust housing, it also facilitates effective power management, so it can be used in low energy schemes.

Key Benefits

  • Versatile: It is well suited for all contact smart card operations, including single sign-on, online banking and digital signature applications
  • Easy to install: Using native supported CCID drivers within the operating system, it eliminates the need for installing drivers
  • Readily compliant: It meets all relevant industry standards, so you can smoothly integrate it into a PC environment
  • Convenient and reliable: Designed with multiple-base mounting options, a robust housing and a USB cable — all of which make it absolutely convenient to use
  • Suits any application: Compatible with any smart card or major PC operating system

Additional information

Weight 0.5 lbs
Dimensions 3.15 × 2.64 × 1.10 in

R31210320-01, R31210349-01

Smart Card Interface
Card Size ID-1 (Full size)
Standards ISO 7816
Supported Card Types Class A: 5V @ 60 mA; Class B: 3 V @ 60 mA; Class C: 1.8V @35 mA
ATR response time up to 1.6 s
Protocols Asynchronous: T=0; T=1
Synchronous: S=8 (I²C) ; S=9 (3-wire); S=10 (2-wire)
Insertion Cycles 100,000
Smart Card Interface Speed 420 kbps
Smart Card Clock Frequency up to 12 MHz
Smart Card detection Movement detection with auto power-off; Automatic detection of smart card type; Short circuit and thermal protection
8-Pin Handling C4 / C8 supported
Host Interface
USB Interface USB 2.0 Full Speed Device (12 MBps)
USB 3.0 extended operability, tested with hubs/controllers
Connector / Cable USB Type A connector; 59.1″ (150 cm) cable
Operating Systems Windows 10/8.1/8/7/Vista/Server 2012/Server 2008R2
Windows CE (5/6/7) depending on hardware
Linux Debian 6.0+ / Ubuntu 11.04+/ Fedora 15+; Open SUSE 11.4+
Mac OS X; Android™
Driver CCID native driver from operating system
Human Interface
Status indicator Dual-color LED (green & red)
Housing Two-tone grey, ABS plastics
Dimensions 3.15″ x 2.64″ x 1.1″ (80 x 67 x 28 mm)
Weight Reader only 3.88 oz (110g); Standard standing base 1.09 oz (31g)
Operating Temperature 32-131 F (0-55°C)
Operating Humidity 10-90% rH
Storage Temperature -4 – 176 F (-20 – 80°C)
Meantime Between Failure (MTBF) 500.000 hours
Compliance / Certification EMVCo Level 1; USB 2.0; TAA
Regional certifications CE, UKCA, FCC, UL, VCCI, KCC, MIC, RCM (C-Tick)
Environmental WEEE, RoHS, Reach
Warranty Two-year manufacturer’s warranty
Options Part Numbers R31210320-01