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Black rectangular USB-HID card reader with LED indicator, bidirectional swipe slot, dual magnetic heads

MagTek, Inc

MagTek, Inc 21040140 USB-HID credit card reader

SKU CH-NEMW-RMB90 MPN 21040140

USB-HID magnetic-stripe reader reads tracks 1, 2 and 3 at 3 to 60 IPS with 99.9% first-swipe accuracy

  • Interface typeUSB-HID
  • Max read speed3 to 60 IPS
  • Track1, 2 & 3
  • Card formatISO 7810 and ISO 7811/AAMVA
  • Product typeMagStripe Reader
  • Product colorBlack
  • Reads any swipe direction with dual magnetic heads
  • Captures three tracks of ISO and AAMVA card data
  • Connects instantly via USB-HID with no driver installation
  • Compact 3.94" x 1.28" x 1.23" design fits tight counters
  • LED status indicator shows reader operation at a glance

Dual-head magnetic stripe reader

The MagTek 21040140 reads tracks 1, 2 and 3 on ISO 7810 and ISO 7811/AAMVA cards with a dual-head design that accepts bi-directional swipes. It connects through a USB-HID interface compliant with USB 1.1 and HID 1.1 specifications. An LED indicator shows reader status during operation.

Who this suits and who it does not

Retail and hospitality operators who need reliable first-swipe capture on standard magnetic stripe cards will benefit from the 99.9% accuracy rate and dual-head convenience. Environments that have moved to chip or contactless payments, or that require keyboard-emulation output instead of HID, should consider a different device.

Deciding specification: USB-HID interface

The reader presents itself as a standard HID class device on any host with a USB port, requiring no custom driver installation. This determines whether it integrates directly with your existing POS software or terminal. Power is drawn from the USB bus at 5 V.

How it compares

Measured against everything we stock in Magnetic Stripe Card Readers, at today’s prices. Recalculated every night.

Price $50.99
Cheaper than about 67% of the 48 comparable items (median $64.99).

Specifications

Product
Brand nameMagTek
Model name21040140
Product typeMagStripe Reader
Product colorBlack
Performance
Max read speed3 to 60 IPS
Ports & slots
Interface typeUSB-HID
Size & build
Product dimensions3.94 in × 1.28 in × 1.23 in(L × W × H)
Product weight4.5 oz (127.57 g)
Shipping weight0.91 kg
Package size203 × 203 × 178 mm
More details
Track1, 2 & 3
Card formatISO 7810 and ISO 7811/AAMVA

Questions about this item

Will the 21040140 work with an older POS terminal that only has USB 1.1 ports?

Yes, the reader is compatible with USB specification Revision 1.1 and draws 5 V from the bus, so it will operate on legacy USB 1.1 ports without an external power supply.

How do I confirm the 21040140 is reading tracks 1, 2 and 3 correctly after I plug it in?

Swipe a test card; the top-mounted LED shows continuous reader status, and the HID device will output all three tracks of ISO 7810/7811 data on the first swipe at up to 60 IPS.

Does the 21040140 package include a USB cable or mounting bracket, or must I buy them separately?

The unit ships as a standalone reader with integrated USB-HID connectivity; no separate cable or bracket is mentioned in the specifications.

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