https://www.qnap.com/en/product/qna-tb-10gbe/specs/hardware/QNA-T310G1S.pdf

Interface Single-port Thunderbolt 3 to single-port 10GbE SFP+
Data Transfer 10Gbps / 1Gbps
Cables Thunderbolt 3 : Thunderbolt 3 cable Network cable: SFP+ DAC cable * 0.5M Thunderbolt 3 40Gb/s cable x 1 included
Power Supply Unit Bus powered
Dimensions (H x W x D) 27.6 x 56 x 113.2 mm 1.08 x 2.20 x 4.46 inch
Weight Net weight: 0.16Kg, Gross weight: 0.33Kg
LED Indicators Power, LAN Link/Act, transfer speed
Package Contents QNA-T310G1S, 0.5M Thunderbolt 3 cable x 1, installation guide