Black Box Corporation
Black Box FA4509M-BK DB9 Male to RJ45 Female Modular Adapter Connector
Converts a DB9 serial port to an RJ-45 or RJ-11 connection for patch-panel mounting
- ColorBlack
- TypeModular Adapter Kit DB9M to RJ-45F
- Changer TypeDB-9/RJ-45
- SpecificationsConvert DB9 interfaces to RJ-45 or RJ-11. Can be mounted in
- FeaturesConvert DB9 interfaces to RJ-45 or RJ-11. Can be mounted in
- Converts DB9 serial ports to RJ45 or RJ11 network jacks
- Mounts directly into any blank patch panel for tidy integration
- Gold-nickel plated contacts resist corrosion and maintain signal quality
- RoHS and WEEE certified with PVC insulation for environmental compliance
- Lifetime guarantee from Black Box backs long-term reliability
DB9 Male to RJ45 Female Adapter
This Black Box modular adapter converts a 9-pin DB9 male serial port to an RJ45 female jack. It accepts both RJ-45 and RJ-11 plugs for flexible cabling. The unit is designed to mount in a blank patch panel for tidy rack installations. It ships unassembled in a black PVC housing with gold-nickel plated contacts.
Suited for serial-to-network patching
Technicians extending legacy serial gear over structured wiring will find this adapter a direct fit. It is not for buyers who need a powered signal converter or protocol translation. It also does not suit applications requiring a pre-assembled, moulded cable assembly. The lifetime guarantee covers the passive connector hardware only.
Passive pin-out under sustained use
Because the adapter contains no active electronics, its behaviour under continuous load is defined entirely by the attached cable runs and connected devices. Contact resistance stays stable as long as the gold-nickel plating remains clean and seated. No heat is generated by the adapter itself during extended sessions. RoHS and WEEE compliance confirms the materials meet environmental standards.
Highlights
- Converts DB9 serial ports to RJ45 or RJ11 network jacks
- Mounts directly into any blank patch panel for tidy integration
- Gold-nickel plated contacts resist corrosion and maintain signal quality
- RoHS and WEEE certified with PVC insulation for environmental compliance
- Lifetime guarantee from Black Box backs long-term reliability
Specifications
| Brand | Black Box |
|---|---|
| Model | FA4509M-BK |
| Color | Black |
| Type | Modular Adapter Kit DB9M to RJ-45F |
| Changer Type | DB-9/RJ-45 |
| Specifications | Convert DB9 interfaces to RJ-45 or RJ-11. Can be mounted in a blank patch panel. Comes unassembled. Black. Guaranteed for life! |
| Features | Convert DB9 interfaces to RJ-45 or RJ-11. Can be mounted in a blank patch panel. Comes unassembled. |
| Shipping weight | 0.45 kg |
| Package size | 51 × 25 × 13 mm |
Questions about this item
What DB9 serial device do I need to connect this Black Box FA4509M-BK adapter to?
Connect the 9-pin DB9 male end of the adapter to any standard DB9 female serial port on your equipment.
Will this adapter fit into my existing patch panel alongside older RJ45 keystones?
The modular adapter can be mounted in a blank patch panel opening and presents a standard RJ45 female jack.
How can I verify the gold-plated contacts are making a solid connection after I assemble the kit?
After assembly, plug a known-good RJ45 cable into the female jack and confirm link lights or serial communication on the connected DB9 device.
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