Build Your Complete System
Manufacturer-verified compatible cameras, recorders, mounts, accessories, and licenses for this product. Adjust quantities and add the entire bundle to your cart in one click.
No Bots, Just Experts
Questions about this product? Free pre-sales support from a senior specialist — product questions, compatibility checks, BOM quotes, price confirmation — typically answered within one business day. Need camera placement or system design work? Engineering time is $175 per hour (qty 1 = 1 hour). Hardware buyers get up to one hour ($175) credited back on their order.
StarTech 9FMNM-3M-RS232-CABLE DB9 Serial Null Modem Cable
Overview
The StarTech 9FMNM-3M-RS232-CABLE is a 3-meter (9.8 ft) serial null modem cable designed to directly connect two DTE or DCE devices, such as connecting a computer to a serial printer or a console port on network equipment. This cable facilitates direct serial communication without requiring a modem. The 9FMNM-3M-RS232-CABLE is constructed with 28 AWG tinned copper wire for reliable data transmission.
Compatibility
This cable is designed for general-purpose serial communication and is compatible with any device requiring a DB9 male to DB9 female null modem serial connection. It is suitable for connecting to serial ports on industrial controllers, laboratory equipment, point-of-sale systems, and legacy network hardware. The cable's wiring scheme supports standard null modem configurations.
Installation Notes
The cable operates within a temperature range of 20 to 80C (68 to 176F) and can be stored between 20 to 80C (68 to 176F). It supports a humidity range of 15% to 65% non-condensing. The PVC jacket provides durability for standard installations. The connectors are nickel-plated for corrosion resistance. The cable features a straight-through wiring configuration suitable for null modem applications.
What's in the Box
- 1x 9FMNM-3M-RS232-CABLE Null Modem Cable
- 1x Instruction Manual
StarTech 3M RS232 Serial Null Modem DB9 - 9FMNM-3M-RS232-CABLE
Build Your Complete System
Manufacturer-verified compatible cameras, recorders, mounts, accessories, and licenses for this product. Adjust quantities and add the entire bundle to your cart in one click.
Looking for more StarTech products? Shop the full StarTech catalog →
System Design, Deployment & Technical Support
Support services and planning resources for commercial surveillance, access control, and infrastructure deployments.
Fixed scope • Fixed price
System Design Assistance
- Get help validating product compatibility
- Coverage requirements
- Storage planning and deployment architecture before you buy.
Deployment & Configuration Support
- Access fixed-scope support for rollout planning
- User setup guidance
- Migration and system standardization across single-site or multi-site deployments
Guides, Tools & Calculators
- PoE requirements
- Storage retention
- Camera selection and deployment methodology