LineSelect® Model 9258 Six-Channel RS530 DB25 A/B Switch with Six Independent Channels
Overview
The Model 9258 DB25 6-Channel A/B Switch is a rugged, rackmount-ready solution designed to simplify how you manage and share DB25-connected devices. It allows a single “common” device to switch between two separate connections (A or B) across six independent channels, eliminating the need for constant cable swapping. Built for reliability and ease of use, this switch operates entirely manually—no power required—making it ideal for mission-critical environments where simplicity and uptime matter.
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Applicable to switching ANY DB25 interface devices.
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Ideal for Commercial-Off-The-Shelf (COTS) purchase applications.
FEATURES OF THE MODEL 9258 RS530 A/B SWITCH:
- Each channel allows quick connection to any one of two devices from one COMMON device.
- The ports are transparent to all data.
- All (25) pins of the DB25 interface are switched via break-before-make rotary switch.
- Manual operation via front-panel rotary switches.
- Independently switch each of six channels via knobs on the front panel.
- High quality sealed switch self-wiping low impedance contacts.
- Eliminates the need to plug and unplug cables.
- No external power required.
- Improves computer network efficiency by allowing sharing of peripherals.
- Attractive all metal, black box packaging provides EMI/RFI shielding.
- Lifetime warranty against manufacturing defects.
- Custom length DB25 cables available for your switch installation.
- Municipalities, schools, government: This product is on GSA Schedule!
THE MODEL 9258 RS530 A/B SWITCH OPERATION:
- The LineSelect® Model 9258 6-Channel RS530 DB25 A/B Switch, allows the user six independent channels of A/B switch function.
- The A/B function permits access by either of two devices connected to ports A and B, to a single COMMON port.
- The LineSelect® Model 9258 is a manual switch and requires no power.
- The LineSelect® Model 9258 is enclosed in a 2U, full rack size, all metal chassis designed to provide EMI/RFI shielding and fit in a standard 19" rack.
TECHNICAL SPECIFICATIONS:
- PORT CONNECTORS: (18) DB25 female connectors labeled A, B, and COMMON. (Three for each of six channels)
- FRONT PANEL CONTROLS: (6) Rotary Switches on front panel, one knob per channel, to switch each channel independently.
- PINS SWITCHED: All 25 pins switched.
- POWER: No power is required.
- DIMENSIONS: Rackmount configuration 19.0"W x 3.5"H x 8.75"D. (48.3 x 8.9 x 22.2 cm)
- WEIGHT: Approximately 6.1 lbs. (2.8 kg.)
6-Channel DB25, RS530 A/B Switch with Six Independent Channels 6 INDEPENDENT CHANNEL DB25 RS530 A/B SWITCH:
- The drawing illustrates six channels of DB25, RS530 A/B independent channel switching.
- Each channel has a COMMON device connected to the DB25 COMMON port sharing between two devices connected to the DB25 A and B ports.

- Red and Green light emitting diodes indicate status of key signals at the EIA/TIA data interface.
- Easy to use, for fault isolation.
- Electro Standards can supply all your Network Cable requirements.

Ordering Information
- Catalog Number: 309258
- Model Number: 9258
- Base Price: See website or contact us for current pricing and availability.
Documentation & Support
- Specification Sheet (PDF) Download Available.
- Product Manual available upon request.
- For custom fiber optic network switch requirements contact our sales support team 401-943-1164 or email eslab@electrostandards.com
- We welcome international inquiries and ship worldwide.
Shipping and Returns 
- Shipped via UPS ground (unless otherwise requested).
- Freight Charges prepaid and added to invoice. We can estimate freight charges for you.
- Return policy: contact us within 30 days of shipment for an RMA number. Items returned without RMA not accepted. Please refer to our full return policy in our Terms and Conditions found on our website.
This high-quality network switch is available to city, state, and federal government purchasers at a discounted price and favorable payment and shipping terms via GSA Schedule GS-35F-0286V. Click here for GSA details.
Model 9258 is available to government purchasers on our GSA Schedule GS-35F-0286V. Call for discounted price and terms.
Electro Standards can supply all your Network Cable requirements. Click here to reach our CABLES, COPPER NETWORK Webpage.
For custom network switches call our friendly customer support staff at 401-943-1164, email eslab@electrostandards.com, or complete our online form: /Products-Custom/Copper-Switch/
All data switches, data communication products, and data acquisition products are subject to a one year warranty against manufacturing defects. The limit of ESL liability is limited to the cost of the ESL product provided.
*Prices online are subject to change and verification.
All ESL products are available for export.
Electro Standards welcomes International inquiries: commutateur d'ordinateur, equipo interruptor, interruttore del calcolatore, interruptor do computador, dator switch.