What do you mean with "hardware accessories requirement"?
VSX requires you to play with 2 (two) Aruba 8320 OR 2 (two) Aruba 8325 OR 2 (two) Aruba 8400X switches...you can't mix them to form a VSX.
All the switch above will permit you to select most appropriate interfaces (generally using SFP+, QSFP+ Transceivers or DAC Cables) to setup VSX ISL aggregated link and VSX ISL Keepalive link (SFP Transceiver(s) will suffice)...there is not a universal BoM Bill of Material to create a VSX deployment...it is all dependant by YOUR SCENARIO/TOPOLOGY and YOUR SPECIFIC REQUIREMENTS/RESTRICTIONS/BUDGET.