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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HP J3302A ProCurve Ethernet 10 Base-T Hub 24-Port Network Unmanaged
HP
$100.00Was: $200.00HP J3302A ProCurve Ethernet 10 Base-T Hub 24-Port Network UnmanagedThe HP J3302A is a 24-port unmanaged Ethernet hub designed for small-office and workgroup networking environments. This hub operates at 10 Mbps (10 Base-T speed) and uses standard RJ-45...16797- SKU:
- 16797
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 0.00 LBS
- Brand:
- Hewlett-Packard
- Model:
- J3302A
- Product Line:
- ProCurve
- Type:
- Unmanaged Ethernet Hub
- Number of Ports:
- 24
- Port Type:
- RJ-45
- Network Speed:
- 10 Mbps
- Standards:
- IEEE 802.3 10 Base-T
- Management:
- Unmanaged
- Form Factor:
- Desktop / Tabletop
- Power Requirements:
- External power adapter
- Country/Region of Manufacture:
- United States
- SKU:
- 16797
- Condition:
- Used – Pulled from Working Environment
- Condition Notes:
- HP J3302A ProCurve 24-port Ethernet hub, used condition, pulled from working environment, all ports present. Inspected and ready for deployment.
$100.00Was: $200.00 -
Ungermann-Bass STM24 Access/Stax 24-Port Ethernet Hub 3-Segment 1U Rackmount
Ungermann Bass
$55.00Was: $100.00Ungermann-Bass STM24 Access/Stax 24-Port Ethernet Hub 3-Segment 1U Rackmount24-port unmanaged Ethernet hub with three network segments. Mounts in standard 19-inch rack at 1U height. Routes traffic across 24 RJ-45 ports with per-port link and partition...11133- SKU:
- 11133
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 7.00 LBS
- Brand:
- Ungermann-Bass
- Model:
- STM24
- MPN:
- STM24
- Type:
- Ethernet Hub
- SKU:
- 11133
- Number of Ports:
- 24
- Port Type:
- RJ-45
- Network Segments:
- 3 (Segment 1, Segment 2, Segment 3)
- Form Factor:
- 1U Rackmount
- Management Type:
- Unmanaged
- Series:
- Access/Stax
- Power Requirements:
- 120/240V AC, 1.0/0.5A, 50/60Hz
- Fuse Rating:
- 250V, 1.5A, T (SLO-BLO)
- Serial Port:
- Yes — DB-9 serial port on front panel
- Media Expansion Port:
- Yes — front panel Media Expansion Port
- Expansion Ports:
- Yes — rear panel Expansion Ports (IN/OUT, DB-50 style)
- Alt Port:
- ALT PORT 1 on front panel
- Status Indicators:
- Per-port Link/Partition LEDs; Collision/Mode LEDs
- Port/Segment Configuration:
- Rotary selector on front panel
- Country/Region of Manufacture:
- United States
- Condition:
- Used – Inspected
- Seller Notes:
- Unit only; no cables or accessories included
- Condition Notes:
- Ungermann-Bass STM24 24-Port Ethernet Hub. Inspected and in good used condition. Chassis clean with minor cosmetic wear; all ports intact. No accessories included. Please view our photos and contact us with any questions.
$55.00Was: $100.00 -
SMC Elite 3812TP 10BASE-T Concentrator 12-Port Rackmount Hub SMC3812TP
SMC
$45.00Was: $90.00SMC Elite 3812TP 10BASE-T Concentrator 12-Port Rackmount Hub SMC3812TPThis is a 12-port 10BASE-T Ethernet hub designed for connecting legacy network devices. It functions as an unmanaged concentrator for 10 Mbps networks in a 1U rackmount form factor...11137- SKU:
- 11137
- Availability:
- Usually ships within 1–2 business days.
- Weight:
- 10.00 LBS
- Brand:
- SMC
- Model:
- Elite 3812TP
- MPN:
- SMC3812TP
- Type:
- 10BASE-T Ethernet Concentrator / Hub
- SKU:
- 11137
- Number of Ports:
- 12
- Port Speed:
- 10 Mbps (10BASE-T)
- Connector Type:
- RJ-45
- Network Standard:
- 10BASE-T (IEEE 802.3)
- Form Factor:
- Rack Mount, 1U
- Management Type:
- Unmanaged
- Stacking:
- Yes (stacking cables sold separately)
- Condition:
- Used – Pulled from Working Environment
- Seller Notes:
- Stacking cables, terminators, and power supplies available separately.
- Country/Region of Manufacture:
- United States
- Compatible With:
- SMC Elite stackable hub series
- Condition Notes:
- SMC Elite 3812TP 10BASE-T 12-port hub inspected and in good used condition. Pulled from a working environment where it was in active use. Normal cosmetic wear. Stacking cables/terminators/power supplies sold separately.
$45.00Was: $90.00 -
NBase Communications NH 2012 Mega Switch II 8-Port 10/100 Ethernet Switch SNMP
NBase Communications
$70.00Was: $200.00NBase Communications NH 2012 Mega Switch II 8-Port 10/100 Ethernet Switch SNMPManaged Fast Ethernet switch with 8 RJ-45 ports operating at 10/100 Mbps. Designed for small to mid-size network deployments requiring port-level management and SNMP monitoring...12040- SKU:
- 12040
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 12.00 LBS
- Brand:
- NBase Communications
- Model:
- NH 2012
- MPN:
- NH2012-AT10
- Type:
- Managed Fast Ethernet Switch
- SKU:
- 12040
- Number of Ports:
- 8 RJ-45 + 2 expansion slots (Ports 9–12)
- Port Speed:
- 10/100 Mbps (10Base-T / 100Base-TX)
- Expansion Slots:
- 2 High-Speed Network Interface slots
- Uplink Options:
- 100Base-TX, 100Base-FX, ATM, Gigabit, ISVLAN
- Management Type:
- Managed — SNMP, Spanning Tree, RMON
- RMON Groups:
- Groups 1, 2, 3, and 9
- Duplex:
- Full and Half Duplex, configurable per port
- Flow Control:
- Selective Flow Control (half and full duplex)
- Forwarding Rate:
- 810,000 pps
- Architecture:
- Direct transfer (source port to destination port)
- Max Transmission Distance:
- Over 110 km with singlemode 100Base-FX
- Console Interface:
- DB-9 serial (Console Mgmt port)
- Power Requirements:
- 100-250V AC, 2A, 47-62Hz
- Form Factor:
- Desktop
- Condition:
- Used – Inspected
- Seller Notes:
- Unit only; no modules in expansion slots.
- Country/Region of Manufacture:
- Israel
- Condition Notes:
- NBase NH 2012 Mega Switch II 10/100 Ethernet Switch. Inspected, in good condition. Chassis clean with light wear. All 8 RJ-45 ports and console port intact. Both expansion slots empty. Powers on per photos.
$70.00Was: $200.00 -
Met One 130-115 Data Multiplexer 3 Cards 115V 60Hz Environmental Monitor 1994
Met One
$175.00Was: $350.00Met One 130-115 Data Multiplexer 3 Cards 115V 60Hz Environmental Monitor 1994The Met One 130-115 is a benchtop data multiplexer manufactured by Met One Instruments of Grants Pass, Oregon. It is designed to collect and route data signals from multiple...12332- SKU:
- 12332
- Availability:
- Usually ships within 1–2 business days.
- Weight:
- 18.00 LBS
- Brand:
- Met One
- Model:
- 130-115
- MPN:
- 130-115
- SKU:
- 12332
- Type:
- Data Multiplexer
- Manufacturer:
- Met One Instruments
- Date of Manufacture:
- March 1994
- Power Requirements:
- 115V AC, 60Hz
- Voltage:
- 115V
- Frequency:
- 60Hz
- Number of Expansion Cards:
- 3 (installed); up to 10 slots total
- Number of Expansion Slots:
- 10
- Serial Interface:
- D-Sub (DB-25 style) serial port
- AC Input Connector:
- IEC C14 (standard 3-pin power inlet)
- Form Factor:
- Benchtop / Desktop
- Application:
- Environmental monitoring, particle counter data acquisition
- Compatible With:
- Met One particle counters and environmental sensors
- Condition:
- Used – Powers on, POWER light confirmed; further testing limited
- Seller Notes:
- Includes 3 installed expansion cards. Powers on, POWER light illuminates.
- Country/Region of Manufacture:
- United States
- Condition Notes:
- Met One 130-115 Data Multiplexer powers on, POWER light confirmed. Further testing was not possible. Three expansion cards installed. Light surface wear. Sold as-is beyond power-on confirmation. Please contact us with questions.
$175.00Was: $350.00 -
Bay Networks BayStack 101 CG1001x01 10BASE-T Hub 12-Port RJ-45 NMM Rackmount
Bay Networks
$45.00Was: $90.00Bay Networks BayStack 101 CG1001x01 10BASE-T Hub 12-Port RJ-45 NMM RackmountThe Bay Networks BayStack 101 is a 12-port 10BASE-T Ethernet hub in a 1U rackmount chassis. It provides 12 RJ-45 ports for 10 Mbps half-duplex Ethernet connectivity, a...12663- SKU:
- 12663
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 8.00 LBS
- Brand:
- Bay Networks
- Model:
- BayStack 101
- MPN:
- CG1001x01
- Type:
- 10BASE-T Ethernet Hub
- SKU:
- 12663
- Number of Ports:
- 12
- Port Type:
- RJ-45 (10BASE-T)
- Network Speed:
- 10 Mbps
- Networking Standard:
- 10BASE-T (IEEE 802.3)
- Management Type:
- Managed (Advanced NMM slot)
- Form Factor:
- 1U Rackmount
- Interface Type:
- RJ-45, RS-232 Comm Port, MDI-X/MDI
- Comm Port:
- DB-9 RS-232 Serial
- Management Extension:
- Management Extension In/Out ports (rear)
- Segment Select:
- Hub / Exp segment select switch (rear)
- Certifications:
- UL, CSA, TUV GS, CE, FCC Part 15, VCCI-I
- Country/Region of Manufacture:
- United States
- Condition:
- Used – Inspected and in Good Condition
- Seller Notes:
- Hub only; no additional modules included.
- Condition Notes:
- Bay Networks BayStack 101 CG1001x01 10BASE-T Hub. Inspected and in good condition. Light rack wear; all ports intact. Hub only, no NMM modules included. Please contact us with any questions.
$45.00Was: $90.00 -
Adtran DSU II AR J131C T1 DSU CSU RS-232 V.35 Primary Secondary Channel
Adtran
$35.00Was: $70.00Adtran DSU II AR J131C T1 DSU CSU RS-232 V.35 Primary Secondary ChannelThe Adtran DSU II AR is a standalone T1 DSU/CSU (Data Service Unit / Channel Service Unit) designed for digital WAN connectivity over T1 lines. It provides both a Primary RS-232 port...15019- SKU:
- 15019
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 5.00 LBS
- Brand:
- Adtran
- Model:
- DSU II AR
- MPN:
- J131C
- SKU:
- 15019
- Type:
- T1 DSU/CSU (Data Service Unit / Channel Service Unit)
- Condition:
- As-Is / For Parts or Not Working
- Interface Type:
- RS-232, V.35, Telco RJ48S
- Number of Ports:
- 4 (Primary RS-232, Primary V.35, Secondary Channel, Telco)
- Connector Type:
- DB25 (RS-232), DB37 (V.35), DB25 (Sec Channel), RJ48S (Telco)
- Data Rate:
- T1 1.544 Mbps
- Power Requirements:
- 115V AC, 60Hz
- Form Factor:
- Desktop
- FCC Registration:
- HDCUSA-65263-DE-N
- Standards Compliance:
- FCC Part 68, USOC Jack Type RJ48S, UL Listed
- Country/Region of Manufacture:
- United States
- Seller Notes:
- Sold as-is for parts or repair. Powers on only — not fully tested.
- Condition Notes:
- Adtran DSU II AR J131C T1 DSU/CSU powers on only — not fully tested. Sold as-is for parts or repair, no functionality guarantee. Cosmetically intact. Please review photos and contact us with questions.
$35.00Was: $70.00 -
Adtran NT1 ACE 1200.019L1 ISDN Network Termination Unit Local Bus S/T U
Adtran
$30.00Was: $60.00Adtran NT1 ACE 1200.019L1 ISDN Network Termination Unit Local Bus S/T U InterfaceISDN network termination unit designed to bridge ISDN BRI U-interface (network side) to S/T local interfaces. Desktop form factor with dual RJ-45 local ports and single...16511- SKU:
- 16511
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 2.00 LBS
- Brand:
- Adtran
- Model:
- NT1 ACE
- MPN:
- 1200.019L1
- SKU:
- 16511
- Type:
- ISDN Network Termination Unit (NT1)
- Interface Type:
- S/T (Local), U (Network)
- ISDN Interface:
- BRI (Basic Rate Interface)
- Connector Type:
- RJ-45 (S/T Local x2, Network U x1)
- Number of Ports:
- 3 (2x S/T Local, 1x Network U)
- Local Bus Configuration:
- Short / Long (jumper selectable)
- Termination:
- None / 100 ohm (jumper selectable)
- Form Factor:
- Desktop
- Protocol:
- ISDN BRI
- Standards Compliance:
- FCC Part 15
- Country/Region of Manufacture:
- United States
- Condition:
- As-Is / For Parts or Not Working
- Seller Notes:
- Sold as-is, untested. Unit only — no power adapter included.
- Condition Notes:
- Adtran NT1 ACE 1200.019L1 ISDN Network Termination Unit sold as-is — we cannot test at our facility. No functionality guaranteed. Cosmetically clean with light wear. No power adapter included.
$30.00Was: $60.00