Tripp Lite DB9 to RJ45 Modular Serial Adapter M/F RS-232 RS-422 RS-485 (P440-89FM)
Running legacy serial lines through existing building conduits often means adapting to standard modular cabling. This adapter bridges a male serial plug to a female modular jack, letting you route printer, terminal, or modem signals through common twisted-pair patch cables. The black housing seats flush against the equipment chassis.
Price as the listing last showed it. Listings move, so the figure on the page you land on is the one that counts at checkout.
- ALLOWS A SERIAL SIGNAL TO BE SENT OVER TWISTED-PAIR CAT5E/6 CABLE: DB9 male to RJ45 female adapter allows a serial signal to be sent over twisted-pair Cat5e/6 cable. Recommended for creating customized connections with terminals, serial printers, modems, POS and other serial devices.
- MALE TO FEMALE - DB9 TO RJ45 MODULAR SERIAL ADAPTER: Converts DB9 male connection to RJ45 female connection. Compatible with readily available Cat5e/6 patch cables. DB9 to RJ45 adapter with male to female connections.
- COLOR-CODED WIRES: The DB9 to RJ45 modular adapter features a male DB9 serial connector with color-coded twisted-pair wires on one side and an RJ45 female connector on the other, allowing you to create customized RS-232, RS-422 and RS-485 connections.
- EASY, SECURE ATTACHMENT: Slotted, knurled thumbscrews provide a quick, secure attachment to your device. DB9 to CAT5 adapter provides the connection of terminals, modems and other serial devices to CAT5e/6 cabling.
- LIFETIME LIMITED WARRANTY: DB9 male to RJ45 female serial adapter unit offers a lifetime limited warranty.
How this one is built
Internal flying leads
Color-coded wires inside the housing let you pin out custom serial interfaces to match specific hardware requirements. You seat each lead into the modular block to establish the exact transmit and receive paths you need.
Chassis thumbscrews
Slotted, knurled hardware secures the male connector directly into the mating port on your serial hardware. You can cinch it down by hand or finish tightening it with a flat blade in cramped enclosures.
Modular cable interface
The female jack accepts standard twisted-pair patch cables to carry communication across longer paths without dedicated serial runs. It works with common infrastructure lines already pulled through raceways and patch fields.
Molded connector shell
The tough plastic body protects the pinned connections from dust and accidental pulls at the back of the terminal. It holds up under repeated handling when reconfiguring hardware benches or point-of-sale registers.
On the nameplate
These are the figures published for this unit. Where a number is missing here it was not printed on the listing, and we would rather leave the row out than fill it with a guess.
| Connector | RJ45 |
|---|---|
| Color | Black |
| Weight | 22.68 g |
| Warranty | Lifetime Limited Warranty |
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