Rigol DS1104Z Plus 100 MHz Digital Oscilloscope with 4 Channels 100 MHz Digital Oscilloscope with 4 channels plus 12 Mpt memory and connectivity and 1 GSa/sec sampling. Also includes port for logic analyzer for the MSO Upgrade Kit. Future purchase of the MSO Upgrade Kit turns this into a MSO1104Z. 4 Channels, 100 MHz Bandwidth and 16 digital channels Digital Logic Connector for optional MSO upgrade: RPL1116 UltraVision: Deeper memory(Standard 12 Mpts, Upgradeable to 24 Mpts) UltraVision: Up to 30,000 wfms/s Waveform capture rate