ACR39U-UF - Payment terminal ACS - Free user manual and instructions
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| Product Type | Smart Card Reader / Payment Terminal |
| Brand | ACS (Advanced Card Systems) |
| Model | ACR39U-UF |
| Connectivity | USB 2.0 Full Speed |
| Card Support | ISO 7816 Class A, B, C (5V, 3V, 1.8V) contact smart cards; Mifare and ISO 14443 Type A/B contactless cards |
| Operating System Compatibility | Windows, Linux, macOS, Android (with USB OTG) |
| Dimensions | Approx. 105 mm x 70 mm x 20 mm |
| Weight | Approx. 80 g |
| Power Supply | USB bus-powered (5V DC) |
| Current Consumption | Typical 200 mA, max 300 mA |
| Main Functions | Contact and contactless smart card read/write, PC/SC compliant, EMV Level 1 certified |
| LED Indicators | Power and card status indicators |
| Maintenance & Cleaning | Wipe with a soft, dry cloth. Do not use harsh chemicals or liquids. |
| Security Standards | EMV Level 1, PC/SC, CE, FCC, RoHS |
| Spare Parts & Repairability | No user-serviceable parts. Contact manufacturer for repairs. |
| Warranty | 1 year limited warranty |
| General Information | Designed for secure payment and identification applications. Compact and portable. |
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USER MANUAL ACR39U-UF ACS
ACR39U-UF [USB Type C] Smart Card Reader
Technical Specifications V1.01

Table of Contents
1.0. Introduction ...... 3 1.1. Smart Card Reader....3 1.2. Compact Design 3 1.3. Ease of Integration....3 2.0. Features ....4 3.0. Supported Card Types....5 3.1. MCU Cards 5 3.2. Memory-based Smart Cards....5 4.0. Typical Applications ...... 6 5.0. Technical Specifications ....7
1.0. Introduction
The ACR39U-UF hails the new and modern technology in the world of smart card readers. It is a compact and stylish smart card reader that brings together sophisticated technology with modern design to meet rigorous requirements in various smart card-based applications.
1.1. Smart Card Reader

ACR39U-UF supports ISO 7816 Class A, B, and C smart cards (5 V, 3 V, and 1.8 V) and microprocessor cards with T=0 and T=1 protocol. In addition, it supports a wide variety of memory cards in the market, including the Department of Defense Common Access Card (CAC), and SIPRNET Card. This makes it ideal for a broad range of solutions such as PIV Application, Physical and Logical Access Control, Digital Signature, and Online Banking.
It also features a USB Full Speed interface and a smart card read/write speed of up to 600 Kbps. Highly durable, ACR39U-UF can last for 100,000 card insertion cycles. ACR39U-UF also has various certifications such as EMV™ Level 1 (Contact) and People's Bank of China (PBOC), making it the ideal smart card reader for your e-Banking and e-Payment application needs.
1.2. Compact Design
The modern design of ACR39U-UF, with its matte casing and its USB Type C connector, makes it stand out from ordinary smart card readers as it houses a powerful core that can support demanding applications which can be used anytime, anywhere.
1.3. Ease of Integration
The ACR39U-UF is PC/SC and CCID-compliant, making it easy to install and use, as it is specifically designed to be integrated into any computer-based environment. Its drivers are compatible with operating systems such as Windows®, Linux®, Mac OS®, and Solaris. In addition, ACR39U-UF may now be used on mobile devices running the Android™ platform with versions 3.1 and later.
With its numerous features, the ACR39U-UF is clearly the perfect smart card reader for your smart card solution.
2.0. Features
• USB Full Speed Interface - USB Type C Connector - Plug and Play – CCID support brings utmost mobility • Smart Card Reader:
- Contact Interface:
■ Supports ISO 7816 Class A, B, and C (5 V, 3 V, 1.8 V) cards ■ Supports CAC ■ Supports SIPRNET Card ■ Supports J-LIS Card ■ Supports microprocessor cards with T=0 and T=1 protocol ■ Supports memory cards ■ Supports PPS (Protocol and Parameters Selection) ■ Features Short Circuit Protection
• Application Programming Interface:
- Supports PC/SC o Supports CT-API (through wrapper on top of PC/SC)
• Supports Android™ 3.1 and later 1
• Compliant with the following standards:
- EN 60950/IEC 60950 ○ ISO 7816 ○ EMV™ Level 1 (Contact) ○ PC/SC ○ CCID ○ CE ○ FCC ○ WEEE ○ RoHS 2 ○ REACH ○ TAA (USA) ○ J-LIS (Japan) o VCCI (Japan) ○ PBOC (China)
- Microsoft® WHQL
3.0. Supported Card Types
3.1. MCU Cards
ACR39U-UF operates with MCU cards following either the T=0 or T=1 protocol. It also works with SIPRNET and CAC cards, ideal for US PIV and PKI applications.
3.2. Memory-based Smart Cards
ACR39U-UF works with several memory-based smart cards such as:
- Cards following the I2C bus protocol (free memory cards) with maximum 128 bytes page with capability, including:
○ Atmel®: AT24C01/02/04/08/16/32/64/128/256/512/1024
- SGS-Thomson: ST14C02C, ST14C04C
Gemplus: GFM1K, GFM2K, GFM4K, GFM8K
• Cards with intelligent 1 KB EEPROM with write-protect function, including:
○ Infineon®: SLE4418, SLE4428, SLE5518 and SLE5528
• Cards with intelligent 256-byte EEPROM with write-protect function, including:
○ Infineon®: SLE4432, SLE4442, SLE5532 and SLE5542
4.0. Typical Applications
• e-Government • e-Banking and e-Payment • e-Healthcare • Public Key Infrastructure • Network Security - Access Control - Loyalty Program
5.0. Technical Specifications

Physical Characteristics
Dimensions 72.2 mm (L) × 69.0 mm (W) × 14.5 mm (H)
Weight 56 g
Color .... Black (Matte)
USB Host Interface
Protocol....USB CCID
Connector Type.... USB Type C
Power Source.... From USB port
Speed.... USB Full Speed (12 Mbps)
Supply Voltage....5 V
Cable Length 1.5 m (Fixed)
Contact Smart Card Interface
Number of Slot 1 Full-sized Card Slot
Standard ..... ISO 7816 Parts 1-3, Class A, B, C (5 V, 3 V, 1.8 V)
Protocol....T=0; T=1; Memory Card Support
Supply Current Max. 50 mA
Smart Card Read/Write Speed...... 9.6 Kbps – 600 Kbps
Short Circuit Protection ..... (+5) V/GND on all pins
Clock Frequency 4.8 MHz
Card Connector Type....Contact
Landing (optional)
Card Insertion Cycles...... Min. 100,000
Min. 200,000 (for landing connector)
SAM Card Interface (Optional)
Number of Slot 1 Standard SIM-sized Card Slot
Standard ..... ISO 7816 Parts 1-3, Class A, B, C (5 V, 3 V, 1.8 V)
Protocol....T=0; T=1; Memory Card Support
Card Connector Type....Contact
Built-in Peripheral
LED Green
Application Programming Interface
PC-Linked Mode ...... PC/SC
CT-API (through wrapper on top of PC/SC)
Operating Conditions
Temperature 0 °C - 60 °C
Humidity ...... Max. 90% (non-condensing)
MTBF 500,000 hrs
Certifications/Compliance
EN 60950/IEC 60950, ISO 7816, USB Full Speed, EMV™ Level 1 (Contact), PC/SC, CCID, CE, FCC, WEEE, RoHS 2, REACH, TAA (USA), J-LIS (Japan), VCCI (Japan), PBOC (China), Microsoft® WHQL
Device Driver Operating System Support
Windows® XP, Windows Vista®, Windows® 7, Windows® 8, Windows® 8.1, Windows® 10
Windows® Server 2003, Windows® Server 2008, Windows® Server 2008 R2, Windows® Server 2012,
Windows® Server 2012 R2, Windows® Server 2016
Linux®, Mac OS®, Solaris, Android™ 3.1 and later


Android is a trademark of Google LLC.
Atmel is registered trademark of Atmel Corporation or its subsidiaries, in the US and/or other countries.
EMV is a registered trademark or trademark of EMVCo LLC in the United States and other countries.
Infineon is a registered trademark of Infineon Technologies AG.
Linux® is the registered trademark of Linus Torvalds in the U.S. and other countries.
Mac OS is a trademark of Apple Inc., registered in the U.S. and other countries.
Microsoft, Windows, and Windows Vista are either registered trademarks or trademarks of the Microsoft Corporation in the United States and/or other countries.