5-Port Compact Industrial Gigabit IEEE 802.3bt PoE++ Unmanaged Ethernet Switch, 4*10/100/1000TX (90W/Port), 1*100/1000 SFP Slot; 9~55VDC Power Input

5-Port Compact Industrial Gigabit IEEE 802.3bt PoE++ Unmanaged Ethernet Switch, 410/100/1000TX (90W/Port), 1100/1000 SFP Slot; 9~55VDC Power Input

Marsoni

M251S

$483.00

Get it in 3 business days with 1 day shipping. Friday, May 29

5-Port Compact Industrial Gigabit IEEE 802.3bt PoE++ Unmanaged Ethernet Switch, 4*10/100/1000TX (90W/Port), 1*100/1000 SFP Slot; 9~55VDC Power InputAntaira Technologies LNP C501G SFP bt 24 is a 5 port industrial compact Gigabit PoE++ unmanaged Ethernet switch embedded with 4*10 100 1000Tx Ethernet ports that support IEEE802. 3bt for a maximum of 90W port, and 1*100 1000 dual rate SFP slot for fiber connection. The LNP C501G SFP bt is IP40 rated and DIN rail mountable. There are a standard temperature range (STD: 10C to 65C). It also provides high EFT and ESD protection for industrial networking

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If I could give zero stars, I would. Do not purchase if you intend to use the Access Code. I was very careful to scratch off the Access code, but you can see it was still unreadable. I went to the website and submitted a ticket. One option for a reason to submit a ticket is 'unreadable access code", so they know this is a problem. They ask for a photo of the code and a receipt of purchase. I sent both. Then they asked for proof that the book was purchased NEW. This was not noted on the Amazon invoice. I was instructed to reach out to the vendor for the additional info. Or I could spend more money on another access code. There are other study options available.

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Reviewed in the United States on February 20, 2026

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Amazon Customer

Houston, US

★★★★★ 5

Great study book

Format: Paperback

Questions are very similar to my current program questions and have great rationales.

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Reviewed in the United States on November 18, 2025

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