LINKUP sells them - I have 7 for a home server. Up to 50cm for v4 and I have a couple v3 because they go up to 1 meter. https://www.amazon.com/gp/product/B0898

LINKUP sells them - I have 7 for a home server. Up to 50cm for v4 and I have a couple v3 because they go up to 1 meter. https://www.amazon.com/gp/product/B0898QMCLS https://www.amazon.com/gp/product/B0898QMCLS