Computers
Computers have revolutionized the way we live and work, becoming an essential part of modern society. From desktops to laptops, tablets, and smartphones, computers have transformed communication, entertainment, and productivity. They enable users to access information, create content, and connect with others online. Computers operate using hardware components such as processors, memory, and storage, as well as software programs that run various applications. With advancements in technology, computers continue to evolve, becoming faster, smaller, and more powerful. Whether for personal use or business operations, computers play a vital role in today's digital world, offering endless possibilities for innovation and collaboration.
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Codenoll CS-2019 Codestar Lightbus 19-Port Fiber Optic LAN Hub Rackmount 1U
Codenoll
$62.00Was: $180.00Codenoll CS-2019 Codestar Lightbus 19-Port Fiber Optic LAN Hub Rackmount 1U This is a 19-port fiber optic LAN hub designed for rack mounting in 1U form factor. It uses SMA fiber optic connectors and operates on the Lightbus protocol for network...7316- SKU:
- 7316
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 10.00 LBS
- Brand:
- Codenoll Technology Corporation
- Model:
- CS-2019
- MPN:
- CS-2019
- SKU:
- 7316
- Condition:
- Used – Inspected
- Seller Notes:
- Unit only — no accessories included
- Form Factor:
- 1U Rack Mount
- Number of Ports:
- 19
- Interface Type:
- Fiber Optic (Lightbus)
- Network Type:
- Fiber Optic LAN
- Product Line:
- Codestar Lightbus
- Connector Type:
- SMA Fiber Optic
- Country of Manufacture:
- USA
- Condition Notes:
- This Codenoll CS-2019 Codestar Lightbus fiber optic LAN hub shows general wear consistent with prior rack deployment, including surface scuffing and label wear visible on the top panel. The fiber optic SMA ports appear intact.
$62.00Was: $180.00 -
Cabletron TPT-T 10BASE-T Ethernet Twisted Pair Transceiver MAU Lanview AUI
Cabletron
$12.30Was: $30.00Cabletron TPT-T 10BASE-T Ethernet Twisted Pair Transceiver MAU Lanview AUI This external media attachment unit (MAU) converts between AUI (DB15) and 10BASE-T RJ-45 interfaces for legacy Ethernet networks. It supports standard twisted pair cabling with...7273- SKU:
- 7273
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 0.95 LBS
- Brand:
- Cabletron Systems
- Model:
- TPT-T
- MPN:
- TPT-T
- SKU:
- 7273
- Condition:
- Used – Inspected
- Seller Notes:
- Unit only — no cables or power supply included
- Form Factor:
- External / Standalone
- Network Standard:
- IEEE 802.3 10BASE-T
- Interface Type:
- AUI (DB15) to RJ-45 Twisted Pair
- Connector Type 1:
- AUI DB15 (15-pin D-sub)
- Connector Type 2:
- RJ-45 (8P8C)
- Data Rate:
- 10 Mbps
- Cable Type:
- Shielded or Unshielded Twisted Pair (UTP/STP)
- Power Requirements:
- 10–15V DC, 350mA Max
- LED Indicators:
- Lanview diagnostic LEDs (SQE, Link, Activity, Collision)
- Standards Compliance:
- IEEE 802.3, FCC Class A Part 15, UL Listed
- Compatible With:
- Any AUI-equipped Ethernet device or NIC
- Country of Manufacture:
- United States
- Condition Notes:
- This Cabletron TPT-T 10BASE-T Ethernet transceiver has been inspected and shows light cosmetic wear consistent with normal use. The housing appears intact with no cracks, and the AUI DB15 and RJ-45 connectors look clean.
$12.30Was: $30.00 -
Compaq 278031-002 32MB SDRAM 4Mx64 66MHz PC66 DIMM Memory Module
Compaq
$7.40Was: $20.00Compaq 278031-002 32MB SDRAM 4Mx64 66MHz PC66 DIMM Memory Module This is a 32MB SDRAM memory module designed for Compaq Deskpro 4000 and compatible PC66 systems. The 168-pin DIMM form factor operates at 66MHz with CAS latency of 2. Specifications &...7270- SKU:
- 7270
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 1.00 LBS
- Brand:
- Compaq
- Model:
- 278031-002
- MPN:
- 278031-002
- SKU:
- 7270
- Condition:
- Used – Inspected
- Seller Notes:
- Memory module only; no accessories included.
- Form Factor:
- 168-Pin DIMM
- Memory Type:
- SDRAM
- Capacity:
- 32MB
- Speed:
- 66MHz (PC66)
- Configuration:
- 4Mx64
- CAS Latency:
- CL2
- Chip Part Number:
- MT16LSDT464AG-66CL2
- Compatible With:
- Compaq Deskpro 4000; PC66 SDRAM 168-pin DIMM systems
- Country of Manufacture:
- United States
- Condition Notes:
- This Compaq 278031-002 32MB SDRAM DIMM memory module has been visually inspected and shows normal light wear consistent with previous use. The module and gold edge connector appear clean with no visible damage.
$7.40Was: $20.00 -
Cabletron MMAC PSM-R Power Supply Module w/ Redundancy 9000246-04A
Cabletron
$28.40Was: $80.00Cabletron MMAC PSM-R Power Supply Module w/ Redundancy 9000246-04A Modular redundant power supply module designed for Cabletron MMAC-8FNB chassis installations. Provides switchable input voltage and supports redundant power configurations in network...7266- SKU:
- 7266
- Availability:
- Usually ships within 1–2 business days.
- Weight:
- 10.00 LBS
- Brand:
- Cabletron Systems
- Model:
- MMAC PSM-R
- MPN:
- 9000246-04A
- SKU:
- 7266
- Condition:
- Used – Inspected
- Seller Notes:
- Power supply module only; no chassis or additional accessories included.
- Form Factor:
- Card / Module
- Compatible With:
- Cabletron MMAC-8FNB Chassis
- Power Requirements:
- 110VAC/3A or 250VAC/3.5A, 47-63Hz (jumper selectable)
- Voltage Input:
- 110VAC or 220VAC (jumper selectable at P4)
- Frequency:
- 47–63 Hz
- Redundancy:
- Yes — Power Supply Module with Redundancy
- Country of Manufacture:
- USA (PCB); sub-components Taiwan
- Type:
- Modular Redundant Power Supply
- Sub-Component Model:
- Power General 4155-1AP-9943
- Condition Notes:
- This Cabletron MMAC PSM-R Power Supply Module has been visually inspected and shows typical wear consistent with prior rack installation. The PCB and components appear intact with no obvious physical damage observed.
$28.40Was: $80.00 -
Black Box MX330A-D 3174/3274 I-MUX Fiber Optic Copper 4-Port 100-120VAC BNC
Black Box
$55.00Was: $140.00Black Box MX330A-D 3174/3274 I-MUX Fiber Optic Copper 4-Port 100-120VAC BNC This is a 1U rack-mount fiber optic multiplexer designed for IBM 3174 and 3274 cluster controller environments. It provides connectivity between fiber optic and copper BNC...7257- SKU:
- 7257
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 8.00 LBS
- Brand:
- Black Box
- Model:
- MX330A-D
- MPN:
- MX330A-D
- SKU:
- 7257
- Condition:
- Used – Inspected
- Seller Notes:
- Unit only; no accessories included.
- Form Factor:
- Rack Mount, 1U
- Compatible With:
- IBM 3174 and IBM 3274 cluster controllers
- Power Requirements:
- 100-120VAC, 0.3A, 47-63Hz
- Fuse Rating:
- T 250V 0.8A
- Number of Ports:
- 4 MUX ports (BNC) + 1 Fiber Optic Link port
- Interface Type:
- Fiber Optic and Copper (BNC)
- Connector Type:
- BNC (MUX ports), Fiber Optic (Link port)
- Product Type:
- Fiber Optic Multiplexer / I-MUX
- Series:
- 3174/3274 I-MUX
- Certifications:
- UL, ITE E160629, GS, FCC
- Condition Notes:
- This Black Box MX330A-D Fiber Optic I-MUX has been inspected and shows normal wear consistent with prior rack-mount deployment. The chassis and front panel are intact with no significant damage observed.
$55.00Was: $140.00 -
Astrocom 2300/3 DSU/CSU SA Digital Data Service Unit V.35 RS-232 120V
Astrocom
$30.00Was: $85.00Astrocom 2300/3 DSU/CSU SA Digital Data Service Unit V.35 RS-232 120V A DSU/CSU (Data Service Unit/Channel Service Unit) used in telecom and data networks to interface with digital transmission lines. This unit converts and conditions digital signals for...7242- SKU:
- 7242
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 9.00 LBS
- Brand:
- Astrocom
- Model:
- 2300/3 DSU/CSU SA
- MPN:
- 0478001
- Secondary Part Number:
- 0393-01
- SKU:
- 7242
- Condition:
- Used – Inspected
- Seller Notes:
- Includes Astrocom power supply. V.35 and RS-232 ports on rear.
- Form Factor:
- Desktop / Standalone
- Country of Manufacture:
- USA
- Power Requirements:
- 120V AC, 16VA, 50/60Hz, Single Phase
- Interface Type:
- V.35, RS-232, TELCO (RJ)
- Protocol:
- DSU/CSU
- Certifications:
- UL Listed 374X, FCC Part 15 Class A
- LED Indicators:
- ERROR, TD, RD, CTS, LFDA, LINK, POWER
- Test Functions:
- LDL, LAL, RDL, SELF, REMOTE loopback modes
- Condition Notes:
- This Astrocom 2300/3 DSU/CSU SA Digital Data Service Unit has been visually inspected and shows typical wear consistent with prior use. The unit was not powered up or bench-tested at our facility.
$30.00Was: $85.00 -
Apple M2980 AppleDesign Keyboard ADB M3501 Vintage Mac Macintosh 1990s
Apple
$38.90Was: $65.00Apple M2980 AppleDesign Keyboard ADB M3501 Vintage Mac Macintosh 1990s Desktop keyboard for ADB-equipped Apple Macintosh computers from the 1990s. Features an extended US QWERTY layout with numeric keypad and F1–F15 function keys, connected via...7216- SKU:
- 7216
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 4.00 LBS
- Brand:
- Apple
- Model:
- M2980
- Secondary Model:
- M3501
- MPN:
- M2980
- SKU:
- 7216
- Condition:
- Used – Inspected
- Seller Notes:
- Keyboard with attached ADB cable included. No additional accessories.
- Form Factor:
- Desktop / External Keyboard
- Interface / Connector Type:
- ADB (Apple Desktop Bus), Mini-DIN 4-pin
- Cable Type:
- Non-removable ADB cable
- Compatible With:
- ADB-equipped Apple Macintosh computers
- Country of Manufacture:
- Mexico (Assembled in Mexico)
- FCC ID:
- BCGM2980
- Key Layout:
- Extended US QWERTY with numeric keypad and function keys F1–F15
- Era / Decade:
- 1990s
- Color:
- Platinum / Light Gray
- Power Requirements:
- Bus-powered via ADB (no external power required)
- Condition Notes:
- This Apple M2980 AppleDesign ADB Keyboard shows light yellowing on the keycaps and housing consistent with age, and the underside has some dirt and debris accumulation along the spine, visible in photos.
$38.90Was: $65.00 -
Andrew TRR 8218L-DC 301-0156-03 MAU Hardware Rev A 115V 5W Token Ring
Andrew
$60.00Was: $200.00Andrew TRR 8218L-DC 301-0156-03 MAU Hardware Rev A 115V 5W Token Ring Multistation Access Unit (MAU) for Token Ring networks. This Andrew network device connects multiple stations to a Token Ring (IEEE 802.5) backbone using fiber optic ports...7160- SKU:
- 7160
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 8.00 LBS
- Brand:
- Andrew Network Products
- Model:
- 8218L-DC
- Series:
- TRR
- MPN:
- 301-0156-03
- Hardware Revision:
- Rev A
- SKU:
- 7160
- Condition:
- Used – Inspected
- Seller Notes:
- Unit only, no accessories included.
- Form Factor:
- Desktop / Tabletop
- Power Requirements:
- 115V AC, 60Hz, 0.035A, 5W
- Interface Type:
- RI/MAU, RO/Station (fiber optic ports)
- Device Type:
- Multistation Access Unit (MAU)
- Network Standard:
- Token Ring (IEEE 802.5)
- Country of Manufacture:
- USA
- Condition Notes:
- This Andrew TRR 8218L-DC Multistation Access Unit has been inspected and shows normal cosmetic wear consistent with prior use. The chassis and ports appear intact with no obvious damage visible. It has not been bench-tested at our facility.
$60.00Was: $200.00