All Uplevel Hardware is outfitted with 1Gbps Auto-Negotiating Ports. When a connection is negotiated there are three (3x) negotiation possibilities.
1000BASE-T | (1Gbps) | Color Green in the Portal |
100BASE-T | (100Mbps) | Color Blue in the Portal |
10BASE-T | (10Mbps) | Color Yellow in the Portal
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If you connect two 1Gbps devices but the Port color is not Green, this means that one of the twisted pairs in the Ethernet Cable has degraded and needs to be replaced. This can also mean that your Ethernet cable is CAT5, not CAT5-E (minimum spec for 1Gbps).