# YCNMFF DB-9 Female Null-Modem Adapter

A compact RS-232 null-modem adapter with female DB-9 connectors for converting a straight-through serial cable to a null-modem connection.

- Product page: https://catalog.satelusa.com/products/ycnmff/
- Category: Data and programming cables
- Status: current
- Part number: YCNMFF
- Image: https://catalog.satelusa.com/images/products/ycnmff.webp

## Overview

YCNMFF converts a standard straight-through RS-232 cable into a null-modem connection. It is useful when two compatible serial devices need to communicate directly without a modem between them.

The compact, passive adapter has female 9-pin D-subminiature connectors on both sides and requires no drivers or external power. Contact Satel USA to confirm the required serial wiring and gender for your equipment before ordering.

## Highlights

- Female DB-9 connector at each end
- Converts a straight-through RS-232 cable to null-modem wiring
- Compact 50 × 34 × 15 mm housing
- No drivers or external power required
- TAA compliant

## Specifications

### Connections and function

- **Interface:** RS-232 serial
- **Connector A:** DB-9 female, 9-pin D-subminiature
- **Connector B:** DB-9 female, 9-pin D-subminiature
- **Adapter function:** Converts a straight-through serial cable to a null-modem connection for direct communication between compatible RS-232 devices
- **Software requirements:** No drivers required

### Physical

- **Length:** 50 mm / 2.0 in
- **Width:** 34 mm / 1.3 in
- **Height:** 15 mm / 0.6 in
- **Weight:** 31 g / 1.1 oz
- **Color:** White

### Packaging and compliance

- **Package quantity:** One adapter
- **Package dimensions:** 87 × 86 × 20 mm / 3.4 × 3.4 × 0.8 in
- **Shipping weight:** 38 g / 1.3 oz
- **Trade compliance:** TAA compliant
- **Environmental compliance:** CE, RoHS, REACH and WEEE documentation available