Switches and Hubs
Switches and Hubs represent networking devices used to connect multiple devices in a local area network (LAN). Hubs operate at the physical layer of the OSI model, allowing devices to communicate with each other by forwarding data packets to all connected devices. On the other hand, Switches operate at the data link layer, ensuring efficient data transmission by forwarding packets only to the intended recipient. Switches and Hubs play a crucial role in creating a reliable and secure network infrastructure, improving overall network performance and speed. These devices are essential in managing network traffic, enhancing connectivity, and facilitating seamless communication between devices.
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Larse TDSU-B449 T1 Digital Service Unit V.35 RS449 DTE Dual Interface 1U
Larse
$95.00Was: $200.00Larse TDSU-B449 T1 Digital Service Unit V.35 RS449 DTE Dual Interface 1UT1 Digital Service Unit (DSU) with dual DTE interfaces for T1 line termination and protocol conversion. Operates at 1.544 Mbps and supports both V.35 and RS449 DTE connections...13189- SKU:
- 13189
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 12.00 LBS
- Brand:
- Larse Corporation
- Model:
- TDSU-B449
- MPN:
- TDSU-B449
- Secondary Model:
- AB4-B449A-102 Rev.D
- SKU:
- 13189
- Type:
- T1 Digital Service Unit (DSU)
- Interface Type:
- V.35 DTE, RS449 DTE (RS-449), RJ-style LINE port
- DTE Interfaces:
- Dual: V.35 DTE and RS449 DTE
- Data Rate:
- 1.544 Mbps (T1)
- Connector Type:
- V.35 (34-pin Winchester), RS449 37-pin D-sub, LINE RJ
- Form Factor:
- 1U Rackmount
- Country/Region of Manufacture:
- United States
- Protocol:
- T1
- Number of DTE Ports:
- 2 (V.35 and RS449)
- Station Clock:
- Yes — rear-panel Station Clock port present
- Condition:
- Used – Inspected, Pulled from Working Environment
- Seller Notes:
- Unit only; no accessories included. Made in USA by Larse Corporation, Santa Clara, CA.
- Condition Notes:
- Larse TDSU-B449 T1 Digital Service Unit in good used condition. Shows light surface wear from rack use. V.35 and RS449 DTE ports appear intact. Pulled from working environment; not bench-tested at our facility.
$95.00Was: $200.00 -
Larse TDSU-BV35 T1 Digital Service Unit A84-BV35A-102 Rev D V.35 RS449 DTE
Larse
$95.00Was: $200.00Larse TDSU-BV35 T1 Digital Service Unit A84-BV35A-102 Rev D V.35 RS449 DTEThe Larse TDSU-BV35 is a T1 Digital Service Unit (DSU) designed to terminate a T1 line and provide a clean digital interface to customer data terminal equipment (DTE). Manufactured...13188- SKU:
- 13188
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 12.00 LBS
- Brand:
- Larse Corporation
- Model:
- TDSU-BV35
- MPN:
- A84-BV35A-102
- Secondary Model:
- A84-BV35A-102 Rev D
- Type:
- T1 Digital Service Unit (DSU)
- SKU:
- 13188
- Condition:
- Used – Powers On
- Interface Type:
- V.35 DTE, RS449 DTE
- Data Rate:
- 1.544 Mbps (T1)
- Connector Type:
- V.35, RS449 37-pin, RJ-style LINE port, Station Clock BNC
- Form Factor:
- Rackmount, 1U
- Front Panel Indicators:
- DATA, CLOCK, BUFFER, RED ALARM LEDs; EQPT/LINE, NEAR END/FAR END
- Front Panel Controls:
- LOCAL/DTE, SET/RESET, ONES/QRSS TEST, TRANSFRAMER RESET
- Rear Connectors:
- LINE (RJ), STATION CLOCK, V.35 DTE, RS449 DTE (37-pin)
- Hardware Revision:
- Rev D
- Country/Region of Manufacture:
- United States
- Seller Notes:
- Unit powers on. Includes V.35 and RS449 DTE interfaces on rear panel.
- Condition Notes:
- Larse TDSU-BV35 T1 Digital Service Unit powers on and is in good working order. Good used cosmetic condition with light surface soiling and minor scuffing on the chassis. V.35 and RS449 DTE connectors intact. Bottom label clean and legible.
$95.00Was: $200.00 -
Cisco CX-FEIP2-2FX 73-1684-03 2-Port Fast Ethernet IP Module SC Fiber MII
Cisco
$100.00Was: $200.00Cisco CX-FEIP2-2FX 73-1684-03 2-Port Fast Ethernet IP Module SC Fiber MIIThe Cisco CX-FEIP2-2FX is a dual-port Fast Ethernet Interface Processor (FEIP) module designed for the Cisco 7000 and 7500 series router platforms. It provides two 100BASE-FX fiber...11888- SKU:
- 11888
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 11.00 LBS
- Brand:
- Cisco
- Model:
- CX-FEIP2-2FX
- MPN:
- 73-1684-03
- Secondary Model:
- FEIP2-2FX
- Hardware Revision:
- Rev D0
- Type:
- Fast Ethernet Interface Processor Module
- SKU:
- 11888
- Number of Ports:
- 2
- Port Type:
- SC Fiber (100BASE-FX), MII
- Interface Type:
- Fast Ethernet (100BASE-FX)
- Data Rate:
- 100 Mbps
- Connector Type:
- SC Fiber, MII
- Compatible With 1:
- Cisco 7000 Series Routers
- Compatible With 2:
- Cisco 7500 Series Routers
- Form Factor:
- Card / Module
- Condition:
- Used – Pulled from Working Environment
- Country/Region of Manufacture:
- United States
- Seller Notes:
- Board only; no accessories included.
- Condition Notes:
- Cisco CX-FEIP2-2FX 73-1684-03 Rev D0 Fast Ethernet IP module. Visually inspected; light wear consistent with pulled enterprise hardware. Functionality not confirmed at our facility. Please review photos and contact us with questions.
$100.00Was: $200.00 -
Entrega HUB2U1S1P USB Hub 2 USB 1 Serial 1 Parallel Port Combo Hub No AC Adapter
Entrega
$30.00Was: $60.00Entrega HUB2U1S1P USB Hub 2 USB 1 Serial 1 Parallel Port Combo Hub No AC AdapterUSB combo hub that adds 2 USB ports, 1 serial port, and 1 parallel port to a computer with a single USB connection. Bus-powered operation requires no external AC adapter...11440- SKU:
- 11440
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 3.00 LBS
- Brand:
- Entrega
- Model:
- HUB2U1S1P
- MPN:
- HUB2U1S1P
- Type:
- USB Combo Hub (USB + Serial + Parallel)
- SKU:
- 11440
- Seller Notes:
- No AC adapter or USB cable included. Hub unit only.
- Country/Region of Manufacture:
- Taiwan
- Form Factor:
- Desktop
- Number of Ports:
- 4 (2x USB-A, 1x DB9 Serial, 1x DB25 Parallel)
- USB Ports:
- 2x USB Type-A (downstream)
- Serial Port:
- 1x DB9 (RS-232) — labeled S1
- Parallel Port:
- 1x DB25 — labeled P1, For Printer Use Only
- USB Input:
- 1x USB Type-B (upstream host connection) — labeled U-IN
- Interface:
- USB
- Power Source:
- USB bus-powered (no AC adapter required for basic use)
- Compatible With:
- USB-equipped PCs, Macs, laptops — Windows, Mac OS
- Plug and Play:
- Yes — no IRQ conflicts
- FCC Certified:
- Yes — FCC compliant, tested to FCC standards
- Intended Use:
- Home or Office Use
- Condition Notes:
- Entrega HUB2U1S1P USB combo hub in new condition. Unit appears unused with no wear. No AC adapter or USB cable included — hub unit only. Please contact us with any questions.
$30.00Was: $60.00 -
Racal-Datacom Excalibur ISX 5300 T1 Multiplexer DSU/CSU RS-232 V.35 LAN PBX
Racal
$35.00Was: $70.00Racal-Datacom Excalibur ISX 5300 T1 Multiplexer DSU/CSU RS-232 V.35 LAN PBXThe Racal-Datacom Excalibur ISX 5300 is a standalone T1 multiplexer with an integrated DSU/CSU, designed to transport LAN, PBX, voice, and data traffic simultaneously over a...11226- SKU:
- 11226
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 5.00 LBS
- Brand:
- Racal-Datacom
- Model:
- ISX 5300
- MPN:
- Excalibur ISX 5300
- Type:
- T1 Multiplexer with Built-In DSU/CSU
- SKU:
- 11226
- Series:
- Excalibur
- Interface Type:
- RS-232, V.35, T1
- Connector Type:
- RS-232/V.35 (Port 1 & Port 2), DS1A/DS1B/DS1C (RJ), EXT CLK, PWR
- Number of Ports:
- 2 x RS-232/V.35 DTE ports; 3 x DS1 network ports
- Data Rate:
- 1.544 Mbps (T1)
- Protocol:
- T1 ESF/D4
- Application:
- LAN, PBX, Voice, and Data over T1
- Management Type:
- Managed — front-panel LCD display, network management options
- Form Factor:
- Desktop / Standalone
- Power Requirements:
- External power supply included (25V DC)
- Country/Region of Manufacture:
- United States
- Condition:
- Used – Pulled from Working Environment
$35.00Was: $70.00 -
Black Box AC223A KVM Extender Sharer Remote Module Keyboard Mouse Monitor
Black Box
$18.00Was: $40.00Black Box AC223A KVM Extender Sharer Remote Module Keyboard Mouse MonitorThe Black Box AC223A is the remote module for Black Box's KVM Extender/Sharer system, designed to be placed at a remote workstation away from the local host unit. It connects a...10339- SKU:
- 10339
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 4.00 LBS
- Brand:
- Black Box
- Model:
- AC223A
- MPN:
- AC223A
- Type:
- KVM Extender/Sharer Remote Module
- SKU:
- 10339
- Condition:
- Used – Pulled from Working Environment
- Seller Notes:
- Remote module only; no cables or local unit included
- Country/Region of Manufacture:
- United States
- Form Factor:
- Desktop/External Module
- Connectors:
- DB25, HD15 (VGA), DB9, Mini-DIN 6-pin
- Ports:
- Keyboard, Mouse, Monitor, Host
- Compatible With:
- Black Box KVM Extender/Sharer systems
- Interface Type:
- Analog VGA, PS/2
- Number of Ports:
- 4 (Keyboard, Mouse, Monitor, Host)
- LED Indicator:
- Power LED (red)
- Condition Notes:
- Black Box AC223A KVM Extender/Sharer Remote Module in good used condition. Chassis is clean with normal wear. DB25 pins show light dust/oxidation. Other connectors intact. Pulled from a working environment.
$18.00Was: $40.00 -
Data Race 30-1002 Rally Synchronous 9600 BPS Modem V.29 V.22 Dual Channel TDM
Data Race
$45.00Was: $90.00Data Race 30-1002 Rally Synchronous 9600 BPS Modem V.29 V.22 Dual Channel TDMThe Data Race 30-1002 is a desktop synchronous modem from Data Race's Rally product line, designed for 9600 BPS synchronous data communication over leased telephone lines. It...10295- SKU:
- 10295
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 10.00 LBS
- Brand:
- Data Race
- Model:
- 30-1002
- MPN:
- 30-1002
- Product Line:
- Rally
- Type:
- Synchronous Modem
- SKU:
- 10295
- Data Rate:
- 9600 BPS
- Modulation Standard:
- V.29
- Interface Type:
- DB25 (Dual Channel), TELCO Line
- Number of Channels:
- 2 — Channel A (Primary), Channel B (TDM Only)
- Connector Type:
- DB25, TELCO Line Jack, DC Power
- Power Requirements:
- DC Power (external supply)
- Form Factor:
- Desktop
- Front Panel Indicators:
- TX, RX, DSR, DCD, SQ, TEST LEDs
- Protocol:
- Synchronous, TDM
- Condition:
- Used – Inspected
- Seller Notes:
- Unit only; no power supply or cables included unless shown in photos.
- Condition Notes:
- Data Race 30-1002 Rally 9600 BPS Synchronous Modem in good used condition. Visually inspected; typical cosmetic wear. No power supply or cables included. Please view photos and contact us with questions.
$45.00Was: $90.00 -
Raritan MCPS16 16-Channel Master Console Auto-Scan Auto-Skip PS/2 VGA KVM
Raritan
$35.00Was: $70.00Raritan MCPS16 16-Channel Master Console Auto-Scan Auto-Skip PS/2 VGA KVMThe Raritan MCPS16 is a 16-channel KVM master console designed to provide centralized keyboard, video, and mouse control over up to 16 servers or systems from a single operator...8931- SKU:
- 8931
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 13.00 LBS
- Brand:
- Raritan
- Model:
- MCPS16
- MPN:
- MCPS16
- Type:
- KVM Master Console Switch
- SKU:
- 8931
- Number of Ports:
- 16
- Connectivity:
- PS/2 Mouse, VGA, DB25 Channel Ports
- Interface Type:
- PS/2, VGA, DB25
- Connector Type:
- DB25, PS/2 Mini-DIN
- Features:
- Auto-Scan, Auto-Skip, Bank IN/OUT Cascade
- Power Requirements:
- 115V/230V AC, 60Hz/50Hz, 2.5/1.25A
- Form Factor:
- Desktop
- Certifications:
- UL, CE, TÜV (GS)
- Compatible With:
- Raritan KVM switches and server banks
- Condition:
- Used – Inspected
- Seller Notes:
- Unit only; no cables included. Please see photos.
- Country/Region of Manufacture:
- Unknown
- Condition Notes:
- Raritan MCPS16 16-Channel KVM Master Console. Inspected and in good used condition. Light wear consistent with prior use. Rear DB25 ports and PS/2 port appear undamaged. Unit only, no cables included.
$35.00Was: $70.00