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  The OMNIKEY® 3121 is a high-performance, USB smart card reader for desktop use that features multiple base mounting options and a robust housing. Compliant with all industry standards, this reader is compatible with virtually any contact smart card, operating system and a variety of applications. The OMNIKEY 3121 is easy-to-install and well-suited for all contact smart card operations, including single sign-on, online-banking or digital signature applications. Features 
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Specifications
| Physical Characteristics | |
|---|---|
| Dimensions | 80 mm x 67 mm x 28 mm | 
| Weight | 141 grams(With Standard Desktop Base) | Environmental Characteristics | 
| Operating/Storage Temperature | 0 to 55 °C (10-90% Relative Humidity) | 
| Host Interface | |
| USB | USB 2.0 CCID (USB 1.0 Compliant) | 
| Transmit Speed | 12Mbps (USB 2.0 Full Speed) | 
| Smart Card Interface | |
| Standard | ISO 7816 | 
| Protocols | T=0, T=1, 2-wire: SLE 4432/42 (S=10), 3-wire: SLE 4418/28 (S=9), I2C (S=8) | 
| Card size | ID-1 (full-size) | 
| Smart Card Interface Speed | 420 kbps (when supported by card) | 
| Smart Card Clock Frequency | Up to 8 MHz | 
| Supported Card Types | 5V, 3V and 1.8V Smart Cards, ISO 7816 Class A, B and C | 
| Power to Smart Card | 60 mA | 
| 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 | 
| Embedded Technology | OMNIKEY Smart Link Chipset | 
| Status Indicator | Dual Colour LED | 
| Part Number | Model Number | Description | RRP Inc GST  | 
       T %  | 
     
|---|---|---|---|---|
| [A] HID OMNIKEY 3121 USB Reader | ||||
| 9-5610-010-0 | OK-3121 USB | OmniKey USB Reader (TAA compliant) | $88.00 | J |