There had been quite a lot of time since the previous Knoppix edition (v9.1). So, I want to seize the opportunity to suggest returning to Openbox....
2-Cisco WS-X4548-GB-RJ45V 48 Port Gigabit Ethernet Switching Module For Sale
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2-Cisco WS-X4548-GB-RJ45V 48 Port Gigabit Ethernet Switching Module: $139.95
we pulled these 2 from the IT rack when we downsized- both work fine