api 500 slotThe 500VPR is internally wired for PIN 2 hot, and comes with the API L200PS. The inputoutput jacks are both XLRs. The 500VPR can hold up to ten API modules.500VPR is a lunchbox from API tailored to host up to ten 500-series modules. The rack is wired to PIN 2 hot, and comes with a dedicated tri-polar power supply (L200PS). Both inputs