1. Support PCIe 5.0X16 compatible with gen3, gen4, and gen5 2. Convert half-height cards that meet official PCIe size standards to full-height cards 3. Support external power supply, external power supply protection, effectively avoid the problem of reverse current, to the safety of the mainboard power supply 4. Gold finger gold-plated process, gold thickness to 10U. 5. LOTES connector, LCP flame retardant high temperature plastic steel material. 6. High frequency low resistance high temperature and oxygen PCB board, no deformation color semi- parent no white no black. Summary of technical issues: How much higher is Model R33G? R33G increases height by 36.77mm. How to choose external power supply when using R33G? If you need to use an external power supply, insert the PCIe power supply into the power socket and remove J1 and J2. When no external power supply is used, insert all jumper caps. Model R33G Does it support 5.0? Laboratory measurement can reach PCIe5.0. Colour:black Material:PCB+Plastic Steel Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 * PCI-E 5.0 16X Riser Extended Card Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.