91SpecificationsMemoryMemory type 1066 MHz/1333 MHzSODIMM DDR3NOTE: For instructions on upgradingthe memory, see the Service Manual atsupport.dell.com/manuals.ConnectorsAudio one microphone‑inconnector, one stereoheadphones/speakersconnectoNOTE: You can also use the connectors toset up 5.1 channel speakersS/PDIF one headphone/digitalS/PDIF combo connectorMini‑Card one full Mini‑Card slotone half Mini‑Card slotConnectorsHDMIconnectorone 19‑pin connectorNetworkadapterone RJ45 connectorUSB two 4‑pin USB2.0‑compliant connectorsMini‑DisplayPortone 20‑pin connectoreSATA one 7‑pin/4‑pin eSATA/USB combo connectorwith PowerShareMedia cardreaderone 9‑in‑1 slotAntenna‑inconnector(optional)one MCX connector