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"external usb modem"
NGFF M.2 Key B to USB 3.0 Riser Board, 3G/4G LTE WWAN Module USB3.0 Network Adapter with Universal 6Pin & 8Pin Dual SIM Card Slot
Limited time offer, ends 11/25
$19.88
Free Shipping
MICRO CONNECTORS USB 2.0 A-Male to Dual DB9-Male Serial Adapter 5-Pack (E07-162-5P)
$110.99
$12.99 Shipping
MICRO CONNECTORS USB 2.0 A-Male to Dual DB9-Male Serial Adapter 10-Pack (E07-162-10P)
$194.99
$12.99 Shipping
CableCreation USB to RS232 Male Adapter with PL2303 Chipset, USB to DB9 Serial Converter for Windows 11, 10, 8.1, 8, 7, Linux and Mac OS,Black
Limited time offer, ends 11/17
$16.29
Free Shipping
CableCreation USB to RS232 Adapter with PL2303 Chip, USB to DB9 Serial Female Converter Compatible with Windows 10, 8.1, 8, 7, Vista, XP, Linux and Mac OS X 10.6 and Above,Black
Limited time offer, ends 11/17
$23.29
Free Shipping
Vszerda USB 2.0 Type-B Printer Adapter, 2 Pack 90 Degrees USB 2.0 B Male to Type-B Female Printer Adapter for Printer, Scanner, Mobile HDD and MoreLeft Angle
Limited time offer, ends 11/17
$17.28
Free Shipping
2 Pack CH343P USB to Serial Port Module 6Mbps 5V 3.3V TTL UART CH343 Debugging Burning Downloading Type-C Switch Instead CH340
Limited time offer, ends 11/15
$11.73
Free Shipping
2 Pcs USB 2.0 Female to RJ45 8P4C Ethernet Male Extension Cable for Router, ADSL Modem, Camera, Laptop, Desktop (11.81 Inch)
Limited time offer, ends 11/15
$21.79
Free Shipping
USB to RS232 Adapter with FTDI Chipset, USB 2.0 Male to RS232 Female DB9 Serial Converter for Cashier Register, Modem, Scanner, Industriual Machinery, CNC and Above,Black
Limited time offer, ends 11/15
$15.54
Free Shipping
CableCreation USB to RS232 Male Adapter with PL2303 Chipset, USB to DB9 Serial Converter for Windows 11, 10, 8.1, 8, 7, Linux and Mac OS,Black
Limited time offer, ends 11/15
$15.08
Free Shipping
5Pcs CH340G SOP-16 USB to Serial Adapter Chip IC SMD CH340 SMD Serial Chip USB to Serial Port Chip
Limited time offer, ends 11/09
$11.99
Free Shipping