PoE Unmanaged Business Switches 

Buffalo's BS-GUP Series of Gigabit Green Ethernet High Power PoE Switches offer an easy, cost-effective and energy-efficient way to extend your business network at gigabit speeds with convenient Power-over-Ethernet (PoE)




Featuring 5, 8 or 16 gigabit ports including 4, 6 or 12 PoE ports and a maximum 50W or 120W PoE budget respectively, the BS-GUP series provides sufficient power for standard networked devices. Simply plug your network ready devices into one of the available Ethernet ports. Each AUTO-MDIX port automatically detects and configures the correct connection while optional jumbo frame support and full duplex operation provide maximum performance, up to 32 Gbps of total bandwidth on the BS-GU2016P.

  • Lifetime warranty*
  • Power-over-Ethernet (PoE)
  • 5/8/16 gigabit Ethernet ports
  • Durable metal chassis
  • Fan-less (5-port & 8-port ONLY), compact design
  • Fast and easy setup
  • 802.3az Green Ethernet technology
  • Loop prevention
  • Easily mount on a rack† or wall, or place it on a desktop

The BS-GUP series features power-saving 802.3az Green Ethernet technology and an energy conservation feature that monitors the activity status of each port to reduce the total power consumed. 

Gigabit Ethernet, high power PoE, eco-minded operation, performance-minded features and a lifetime warranty make Buffalo's BS-GUP series of Multi-Port Gigabit PoE Switches a perfect network extension solution for your office.


Buffalo's Gigabit Green Ethernet High Power PoE Switches come with a compact and durable all metal chassis and are all but the 16-port fan-less which provides silent and reliable operation.  Buffalo's lifetime warranty* ensures that you will never have to replace your switch due to defects.


Buffalo's BS-GUP series of Gigabit Green Ethernet High Power PoE Switches offers network design flexibility without the reliance of AC power through its high power PoE feature.  Many devices including routers, surveillance cameras andhome automation equipment can be powered through PoE which allows you to place these devices anywhere in your home or office, regardless of whether there is an AC outlet available.  In addition, the fact that PoE eliminates additional AC power cables reduces clutter and gives your home or office a cleaner appearance.


Integrates any Ethernet enabled device with plug and play setup including PCs, TVs, gaming consoles and other digital home appliances.


Multiple gigabit Ethernet ports provide fast transfer rates of large bandwidth intensive files including graphics and multimedia.


Easy to read LED indicators for each port clearly and quickly communicate which ports have active connections as well as which ports have gigabit speed devices attached.  Auto-MDIX provides fast plug and play setup, eliminating the need for a crossover cable while auto-negotiation detects the link speed of the attached device and adjusts for compatibility and optimal performance, making the switch backwards compatible with older network devices.


802.3az Green Ethernet technology monitors the link status of each port and only provides power to those that have a connected device that is powered on and puts transmitters into sleep mode when no information is being sent or received.  In addition, the length of cable connected to each port is detected and the amount of power supplied is adjusted accordingly.  All of these features add up to energy savings of up to 79% over traditional switches.


Buffalo's Gigabit Green Ethernet High Power PoE Switches come with a loop prevention feature that shuts down the port(s) where a network loop is detected.

* Requires product registration within 90 days of purchase
† BS-GU2005P & BS-GU2008P are wall mount or desktop only



Number of Ports 5, 4 x 802.3af PoE (BS-GU2005P)
8, 6 x 802.3af PoE (BS-GU2008P)
16, 12 x 802.3af PoE (BS-GU2016P)
Standards Compliance IEEE802.3 (10BASE-T)
IEEE802.3u (100BASE-TX)
IEEE802.3ab (1000BASE-T), AUTO-MDIX
Flow Control IEEE802.3x
Connector RJ-45 8-pin connector (shielded)


Data Transfer Rates 10/100/1000 Mbps
Switching Capacity 10 Gbps (BS-GU2005P)
16 Gbps (BS-GU2008P)
32 Gbps (BS-GU2016P)
Buffer Memory 128 KB (BS-GU2005P)
256 KB (BS-GU2008P)
512 KB (BS-GU2016P)
Forwarding Method Store & Forward
Media Access Method CSMA/CD
Jumbo Frame 9,216 Bytes (Header 14 Bytes + FCS 4 Bytes inclusive)
Data Transfer Speed 1,488,095 packets/second (1000 BASE-T)
148,810 packets/second (100 BASE-TX)
14,881 packets/second (10 BASE-T)
Transfer Encryption Method 8B1Q4/4D-PAM5 (1000 BASE-T)
4B5B/MLT-3 (100 BASE-TX) 
Manchester encoding (10 BASE-T)
MAC Address Table 8,190 (Self Learning)
Aging Time Default 300 seconds


Power Supply External AC 100-240V, 50/60 Hz (BS-GU2005P & BS-GU2008P)
Internal AC 100-240V, 50/60 Hz (BS-GU2016P)
Power Consumption Max 61W (BS-GU2005P)
Max 60W (BS-GU2008P)
Max 148W (BS-GU2016P)
PoE Budget 15.4W/port, Max 50W (BS-GU2005P & BS-GU2008P)
15.4W/port, Max 120W (BS-GU2016P)
Operating Environment 32˚ - 122˚F (0˚ - 50˚C), 10 - 85% humidity (non-condensing)


Acquired Standards VCCI Class A, UL60950-1, FCC Class A, Canada IC Class A, VCCI Class A, FCC Class A, Canada IC Class A


Dimensions 6.97 x 4.06x 1.22 in BS-GU2005P
6.33 x 7.87 x 1.61 in BS-GU2008P
9.09 x 12.99 x 1.69 in BS-GU2016P
Weight 1.1 lbs BS-GU2005P
2.2 lbs BS-GU2008P
5.5 lbs BS-GU2016P
Compatible Cables 10BASE-T: Category 3 or higher, 100BASE-TX: 5 or more category, 1000BASE-T: Category 5e or better
Package Contents Multi-Port Gigabit Switch 
Power cable
AC adapter*
Power cable retainer band
Rubber feet
Mounting brackets†
Bracket screws†
Serial number stickers
User manual
Warranty statement

*Not included with BS-GU2016P 
†Not included with BS-GU2005P or BS-GU2008P


Buffalo Americas, Inc. Power over Ethernet products (including, but not limited to, BS-GU2005P/BS-GU2008P/BS-GU2016P; and BSL-POE-G2105U and WAPS-APG600H) are licensed under one or more of the following U.S. 
Patents and pending applications: 
United States Patent No. 5,406,260 (expired)
United States Patent No. 6,650,622
United States Patent No. 7,457,250
United States Patent No. 8,155,012
United States Patent No. 8,902,760
United States Patent No. 8,942,107
United States Patent No. 9,019,838
United States Patent No. 9,049,019
United States Patent Application No. 14/695,456
United States Patent Application No. 14/726,940



    File Size Post Date Version OS Support Notes
2016-03-05 Quick Setup Guide for BS-GU2005P Unmanaged PoE Switch
2016-03-05 User Manual for BS-GU2008P Unmanaged PoE Switch
2016-03-05 User Manual for BS-GU2016P Unmanaged PoE Switch


    File Size Post Date Version OS Support Notes
2018-01-06 Windows Download page for the Buffalo Network QuickView software.


5-Port Gigabit Green Ethernet High Power PoE Switch

  • - 5

8-Port Gigabit Green Ethernet High Power PoE Switch

  • - 8

16-Port Gigabit Green Ethernet High Power PoE Switch

  • - 16


Buffalo's Gigabit Green Ethernet High Power PoE Switches come with a compact and durable all metal chassis and are fan-less which provides silent and reliable operation. Buffalo's lifetime warranty* ensures that you will never have to replace your switch due to defects.