SCM SCR331 USB SmartCard Reader

SCM SCR331 USB SmartCard Reader


Out of stock

The square, robust SCM SCR331 USB reader is ISO 7816 compliant, CAC-approved and reads and writes on smart cards in ID 1 card format. With its proven design and a fold-out foothold, the reader is suitable for a wide range of applications. SCM’s on-board flash provides seamless in-field firmware updates.

Out of stock


The SCR331 USB is the first of a new family of smart card readers based on SCM Microsystems’ STC II micro controller, which includes support for multiple interfaces, multiple reader devices and relevant standards. Together, these features provide SCM Microsystems with the unique ability to offer high performance and cost effective solutions. In addition, the SCR331 USB Smart Card Reader USB Smart Card Reader is the industry’s first to offer on-board flash. This enables future firmware and application enhancements that guarantee against obsolescence. The SCR331 features provide SCM with the unique ability to offer high performance and cost effective solutions in the market.

With its proven design and a fold-out foothold, the reader is suitable for a wide range of applications. Typical applications for offices, IT companies and OEMs are for example logical access control to a PC or network, secure authentication for Business-to-Business and Business-to-Consumer applications, secure logon via email encryption.

With its EMV certification, the SCR331 is also suitable for banking related applications. The reader is ideal for integrating it into systems of the gaming industry. Its square modular shape makes it furthermore suitable for integration into external systems such as in transportation related systems, e.g. for parking, ticketing, and toll-collection.

The SCR243 is compatible with CaC, PIV, CIV, Java Card and all T=0/1 smart cards.


Modular form factor allows easy and flexible card-insertion angle

EMV Level 1 AND PC/SC certification based on a single solution

RoHS compliant

Supports PIV and Military Common Access Cards (CAC)

Fully tested and compliant with all major smart cards and relevant industry standards

Can also be integrated into larger OEM systems, both with or without casing as a PCB module

Software and functionality compatible with SCM’s SCR33xx reader family

On-board flash provides seamless firmware upgrades in the field

Customization available:

  •                 Casing Color
  •                 Company Logo
  •                 OEM branding
  •                 OEM without case version



Human Interface One dual state green LED
Host Interface Full speed USB 2.0 (12 Mbps)

USB Bus powered device

CCID compliant

Smart Card T=0, T=1 protocol support

Memory card support through SCM MCARD API

Communication speed up to 344,105 bps (PPS, Fl parameter)

Frequency up to 12 MHz (PPS, Dl parameter)

Support ISO 7816 Class A and AB smart card

Smart Card Connector 8 contacts – ISO location

Certified for 100,000 insertions

Sliding contact

Smart Card Detection Movement detection with auto power-off

Automatic detection of smart card type

Short circuit protection

Supported Smartcard Types 5V, 3V and 1.8V, ISO/IEC 7816 Class A/B/C
Power to Smart card 60mA in Class A; 55mA in Class B; 35mA in Class C
Software Smart PC/SC Diagnostic

SCM Developer Pack



CT-API (thru wrapper on top of PC/SC)

OCF upon request

Supported Operating Systems Windows® 7, 8.1 & 10

Windows® Vista, XP, Server 2003, 2000, ME, 98

Windows® Vista, XP, Server2003 (AMD64/EMT64)

Windows® CE 3.0, 4.1, 4.2, 5.0, 6.0

Apple MacOS, SunSoft Solaris, Linux 32-bit (2.4.x, 2.6.x)/64-bit

Supported Tag ICs All major ISO/IEC 7816 compliant Smart Card IC support
Protocols T=0, T=1
Customization Options Casing color and company logo OEM branding
Cable Cable: 1.5m (5 ft) long with USB type A connector
Connector Type 4 pin USB Type A
Card Size ID-1 (full size), CR80
Form Factor External
Dimensions 90 x 70 x 16.5[mm] / 2.8 x 3.5 x 0.7 [Inch]
Weight 100[g] / 3.5 [oz]
Operating Conditions 0 to 50[°C] / 32 to 140 [°F]

90 % (non-condensing) Humidity

Approvals / Standards / Certifications FCC Class B part 15, cULus, CE,VCCI, ANZI, CNS

Plug and Play


Microsoft® WHQL 2000, XP, Server 2003

EMV Level 1

Regulatory  / Environmental RoHS, WEEE
Manufacturer Identiv (formally SCM Microsystems)
Model SCR331
Part Numbers P/N: 904622, 904334  GSM: 902748

ASIN: B002XJG71M, B001L6J3XC

EAN/UPC: 025675120822

UNSPSC: 778888155517, 717420172162

HP: CC543-60105

Manufacturer Warranty 1 Year

Support & Downloads


SCM Microsystems develops and sells hardware and system solutions that enable people to conveniently and securely access digital content and services. With more than 15 million readers sold for digital authentication programs in the government, the enterprise and financial sectors, SCM is a leading provider of OEM contact and contactless smart card reader technology. The Company also offers a range of smart card-based productivity solutions for small and medium-size businesses under its retail CHIPDRIVE® brand. Additionally, SCM is a leading provider of commercial digital media readers to the worldwide photo kiosk market.

SCM has more than 400 active customers in more than 50 countries worldwide, including major PC OEM manufacturers, smart card manufacturers, system integrators, banks, security application providers, government agencies, distributors, and value added resellers.

SCM is headquartered in Ismaning, Germany and has offices in Fremont, California; Hong Kong; and Tokyo, Japan; as well as a development facility in Chennai, India. The Company is publicly traded on both the NASDAQ Global Market under the symbol “SCMM” and on the Prime Standard of the Frankfurt Stock Exchange under the symbol “SMY.”


SCM has built a strong reputation in the security industry as a major supplier of smart card readers to the U.S. government, to major OEMs, and to various financial and enterprise programs in Europe and APAC. In recent years, the Company has also been a significant supplier of contactless infrastructure components for eGovernment and enterprise authentication programs throughout Europe and to large enterprises in Japan.

SCM has a unique position in the smart card reader market, as it is able to leverage its single chip smart card interface solutions for integration into PCs, keyboards and other devices as well as within its own dedicated reader/writer products. SCM’s interface chips feature embedded FLASH for secure and convenient firmware upgrade in the field.

SCM’s contact smart card reader portfolio supports all relevant host interfaces, including USB, Serial, PCMCIA and ExpressCard™; as well as all major operating systems, including Windows®, Mac OS™ and Linux®. In addition, readers support the ISO standardized Smart Card Interface ISO 7816 (T=0 and T=1), and EMV compliant cards as well as memory cards are supported up to 344 kbps.

SCM offers a range of customized contactless reader devices dedicated for system integrators and ePassport, eID or ePayment reader OEMs. Target markets include card customization, personalization, logical and physical access, public transportation, national IDs and driver’s licenses, and others. The Company also offers dual interface reader modules including both contact and contactless interface.
SCM offers a range of demo kits and SDKs for software and application developers as well as for system integrators.


SCM is a leading provider of commercial digital media readers to major manufacturers of digital photo production equipment for the worldwide photo kiosk market.

SCM has provided commercial digital media readers for more than 10 years and is the market leader in digital media readers for photo kiosks, with over 80% market share.
SCM originated the modular reader drive concept that helps customers reduce repair costs by eliminating the need for a technician and significantly reducing the downtime of the kiosk.
SCM’s digital media readers comply with various agency regulations and are able to provide custom software and firmware where requested.


SCM’s CHIPDRIVE-branded packages for small and medium-sized enterprises and individuals offer affordable, customizable solutions for security, identification, home banking and eCommerce, as well as smart card-based time recording and business productivity.

CHIPDRIVE solutions consist of smart cards used for the authentication of individuals such as employees; card readers/terminals for both fixed and mobile, contact and contactless environments; and software to enable productivity applications such as clock in/clock out, time recording, network logon and password management.
CHIPDRIVE packages combine smart card readers with sophisticated software applications to guarantee easy processing of smart card data on a PC.
The CHIPDRIVE Time Recording, DriverCard, Password Management and SIM Card Management solutions are offered at retailers throughout Europe.


SCM is committed to conducting business in a manner consistent with the efficient use of resources and materials, and the protection and preservation of the natural environment for future generations.

Through a policy of continuous improvement, the implementation of environmental management programs, and the setting of targets and objectives, SCM strives to meet and exceed all relevant environmental laws, regulations and agreements in reference to its activities, products and services.


Year founded: 1990

Place of Business: Ismaning/Munich, Germany

Number of Employees: 159 at December 31, 2008

Key Figures:
Financial Year Ended: December 31, 2007
Annual Revenues: $30.4 million
Cash Position: $32.4 million

Key Management:
• Felix Marx, Chief Executive Officer
• Stephan Rohaly, Chief Financial Officer
• Dr. Manfred Mueller, EVP Strategic Sales & Business Development
• Sour Chhor, EVP Strategy, Marketing & Engineering

Global Presence:
Ismaning, Germany – Headquarters
Fremont, California – Sales
Hong Kong – Sales
Tokyo, Japan – Sales
Chennai, India – Development

– Contact smart reader/writer devices (ISO/IEC 7816)
– Contactless and NFC smart reader/writer devices (ISO/IEC 14443)
– Dual interface smart reader/writer devices (ISO/IEC 7816 & ISO/IEC 14443)
Physical access control terminals (PACT)
– CHIPDRIVE-branded business productivity solutions
Smart card reader ASICs – application specific integrated circuits
– Software development kits (SDKs) & demo kits
– Digital Media Readers – kiosk solutions
– More than 80 patents

IR Contact:
Stephan Rohaly
+49 89 9595-5220

SCM Microsystems, Inc.
Oskar-Messter-Str. 13
85737 Ismaning