when trying to use this adapter to convert DP to HDMI

Physical Characteristics Color Black Housing Material PVC Connector Plating Nickel Wire Gauge 12AWG – 24AWG Electrical Characteristics Max Voltage 300V Max Amperage 2A Connector(s) Connector DB25 Female Environmental RoHS Compliant Package Information Package Quantity 1 Product Weight 0

an RJ45 port and a SD/Micro SD slot on the other end

APC Smart-UPS SU3000RMT3U

This instrument audio cable has a 1/4 inch TS mono male on both ends

Premium Phantom Cables DB25 Male to 8 x RCA Male 8-channel Snake cable (Tascam pinout) Length:3ft when trying to use thisThis audio snake cable has a DB25 male on one end and eight RCA males on the other. It has a TASCAM pinout and is typically used to connect a 7. 1 surround sound source to a preamp or receiver. Premium twisted 24 awg Oxygen Free copper conductor (OFHC) cable is used to capture all highs & lows for optimum audio performance Dual 100% aluminum Mylar foil shields maximize EMI RFI noise rejection therefore maintaining the cleanest signal possible High