What are the dimensions and weight of the KVM Extender Transmitter Interface Card?

The dimensions are 0.7 inches in height, 5 inches in width, and 5.75 inches in depth, with a weight of 0.6 lbs.

What video resolutions does the Black Box ACX2MT-DPHS-SM support?

It supports resolutions up to 4096 x 2160 at 30Hz and 3840 x 2160 at 60Hz.

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Black Box ACX2MT-DPHS-SM DKM FX Modular KVM Extender Transmitter Interface Card - 4K30 DisplayPort 1.1, USB-HID, HS Single-Mode Fiber

DisplayPort 1.1 4k30 video with resolutions up to 4096 x 2160 @ 30Hzand 3840 x 2162 @ 60Hz
Support for USB HID keyboards and mice
LC Single Mode Fiber Connectivity
Audio format PCM can be transferred - Sample rate 96Hz
High Speed 2.5Gbps