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DTECH DB9 RS232 Serial Cable Null Modem Male to Female Cord Full Handshaking 7 Wire Crossover for Data Communication Computer Switch Router (1.5 Feet, Black)
DTECH

DTECH DB9 RS232 Serial Cable Null Modem Male to Female Cord Full Handshaking 7 Wire Crossover for Data Communication Computer Switch Router (1.5 Feet, Black)

Bottom line: The DTECH DB9 RS232 Serial Cable Null Modem Male to Female Cord Full ($7.95 on Amazon as of 2026-10-06): True full-handshaking 7-wire crossover: TX/RX, RTS/CTS, DTR/DSR all cross-linked; main trade-off: 1.5 feet is too short to reach equipment more than an arm's length away.

$7.95

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ True full-handshaking 7-wire crossover: TX/RX, RTS/CTS, DTR/DSR all cross-linked
  • ✓ Screw-lock DB9 connectors on both ends hold the link under vibration
  • ✓ Aluminum foil shielding cuts interference on noisy switch and router racks
  • ✓ 1.5 ft length keeps rack and bench runs tidy without coiled slack

Cons

  • ✗ 1.5 feet is too short to reach equipment more than an arm's length away
  • ✗ Male-to-female wiring only, so two same-gender DTE ports need an adapter
  • ✗ Not a simple or loopback null modem, which some legacy gear expects
  • ✗ DB9 serial only, so it will not work with 15-pin VGA or DB25 ports

Manufacturer description

Full Handshaking Signal RS232 Crossover Cable (7 wires are present), Serial Female to Male Extension Communicationtransfer data between 2 Data Terminal Equipment DTE devices using RS-232 serial communication protocol.If you need a 9 prong 2 row full wire DB9 null modem serial extension cable long enough to control the legacy equipment, 1.5ft 9 pin serial null modem cable can extend original serial to serial cord.(Note: this is a male to female crossover cable null modem with full handshaking, not simple null modem cable, neither a loopback handshake null modem cable)For RS-232C devices…

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SpecPicks Verdict

SpecPicks scored DTECH DB9 RS232 Serial Cable Null Modem Male to Female Cord Full… using a rating × review-volume × price-fit model applied to published specs and reviews across the cables & connectors category. DTECH's cables & connectors lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for cables & connectors of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • 1.5ft RS232 null modem cable male to female (7 wire present full handshaking) connect 2 DTE devices with 9 prong 2 row COM port RS-232 compatible interface (NOT 15 pin 3 row VGA video)
  • Male to female RS232 cable is wired as 9 pin DB9 Null Modem cable that 2-3, 4-6, 7-8 line are cross linked (TX,RX,RTS, CTS, DTR,DSR wires are connected); AL foil shielded 9 pin serial port rs 232 cable
  • 9 pin 2 row DB9 female to male connector on each end equipped with screws to ensure an easy and solid serial extension connection for stable data communication
  • The wires inside are of 30AWG gauge and easy to solder to, and they connect to the pins in the order of the standard wire color code (DB9 cable, not computer monitor DB15 VGA-cable)
  • 1.5 feet short RS232 DB9 male to female cord for hooking up RS232C PC, desktop computer, switch hub, USB to serial adapter, laptop router to transfer file, share resource, direct serial communication link, debugging , tester, testing

Full Specifications

BrandDTECH
ColorFemale to Female
Gauge30.00
ModelDT-9007B-0.5M
Cable TypeSerial
Item ShapeRound
Model Name1.5ft Null serial cable male to female
Unit Count1.0 Count
Part NumberDT-9007B-0.5M
ConnectivityUSB
CompatibilityPC, Switch
Connector TypeDB9
Number of Pins9
Connection TypeWired
Maximum Voltage5 Volts
Number of Items1
Special FeatureData Transfer, Low Voltage
Connector GenderMale-to-Female
Specification MetISO
Compatible DevicesGPS Navigation System, Laptop, Modem, Printer, Scanner

Ready to buy?

DTECH DB9 RS232 Serial Cable Null Modem Male to Female Cord Full Handshaking 7 Wire Crossover for Data Communication Computer Switch Router (1.5 Feet, Black) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $7.95

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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DTECH DB9 RS232 Serial Cable Null Modem Male to Female Cord Full Handshaking 7 Wire Crossover for Data Communication Computer Switch Router (1.5 Feet, Black)
$7.95
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