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Sunix 4056P Serial card one-to-four lines breakout cable 4-Port Serial RS-232 Adapter
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  • $27.98 
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ADAM-4060 4-channel relay RS-485 remote I/O ADAM 4060
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  • $226.29 
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FOR USB 2.0 to 4 Ports RS232 Adapter Convertor DB9 COM RS-232 Serial Port Multiplier
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  • $128.23 
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MOSCHIP MCS9865 PCI to serial card RS-232 serial port expansion cards (4) 9-pin com RS232 port integrated
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  • $64.82 
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Mini PCIe to Serial RS-232 port DB9 Adapter 4 ports RS232 to Mini PCI-e Card chipset converter card
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  • $63.63 
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CP-104EL-A 4-port RS-232 PCI x1 PCI adapter card
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  • $132.98 
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PCIE CH384L 4S DB9 RS232 Serial Port Card Controller Card PCI Express 384 Chip 4 ports rs-232 to pci-e com Adapter
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  • $31.98 
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job For Advantech serial port card 4-port RS-232/422/485 PCI-1612C
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  • $306.34 
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FOR CP-104EL-A 4 Port RS-232 PCI Express x1 PCI-E  adapter card
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  • $134.98 
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UOTEK Industrial RS-485 RS-422 to RS485 RS422 Hub 4 Ports with Optoelectronic Isolation Half Duplex with Lightning Surge Protection  DC/DC Isolated Module UT-1304
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UOTEK Industrial RS-485 RS-422 to RS485 RS422 Hub 4 Ports with Optoelectronic Isolation Half Duplex with Lightning Surge Protection DC/DC Isolated Module UT-1304
  • Standards: RS-485/422 EIA/TIA
  • Transfer Rate: 300bps-115.2Kbps
  • LEDs: PWR, TXD, RXD, and E1-E4 activity
  • Temperature: -40? to 85?
  • Model #: UT-1304
PCM-3641 REV.A1 01-1 4 PORT RS-232 PC104 expansion card
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  • $213.84 
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UOTEK USB to RS-485 RS-422 Converter USB2.0 4 Ports RS485 RS422 Adapter Serial DB9 Connector Optical isolation ESD UT-861A
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  • $131.56 
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Direct from UOTEK Direct from UOTEK
UOTEK RS232 RS485 to RS485 Hub 4 Ports RS-485 Din Rail Hub Industrial Grade RS485 Serial Converter Hub with 600W Lightning Surge Protection UT-5204
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UOTEK RS232 RS485 to RS485 Hub 4 Ports RS-485 Din Rail Hub Industrial Grade RS485 Serial Converter Hub with 600W Lightning Surge Protection UT-5204
  • Standards: RS-232C?RS-485 EIA/TIA
  • LEDs: PWR TXD, RXD, and E1-E4 activity
  • Power Input: 9-30VDC/350mA
  • Temperature: -40? to 85?
  • Model #: UT-5204
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  • $81.19 
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Direct from UOTEK Direct from UOTEK
CI-134IS RS-422/485 Four-port card
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  • $197.40 
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Synology RackStation RS822RP+ NAS Server with Ryzen 2.2GHz CPU, 32GB Memory, 40TB HDD Storage, 4 x 1GbE LAN Ports, Redundant Power, DSM Operating System Bundle with Rail kit
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  • $3,669.00 
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Synology RackStation RS822RP+ NAS Server with Ryzen 2.2GHz CPU, 32GB Memory, 88TB HDD Storage, 4 x 1GbE LAN Ports, Redundant Power, DSM Operating System Bundle with Rail kit
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  • $6,729.00 
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Rosewill 4U Server Chassis Rackmount Case | 8 x 3.5" HDD Bays + 3 x 5.25" Devices | ATX, CEB Compatible | 2 x Front 120mm PWM Fans + 2 x Rear 80mm Fans | 2 x USB 3.0 | Front Panel Lock | Silver/Black
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  • $229.99
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  • $189.99 
  • Save: $40.00 (17%)
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Synology RackStation RS822RP+ NAS Server with Ryzen 2.2GHz CPU, 32GB Memory, 48TB HDD Storage, 4 x 1GbE LAN Ports, Redundant Power, DSM Operating System Bundle with Rail kit
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  • $4,439.00 
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Synology RackStation RS422+ Network Storage Diskless
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Synology RackStation RS422+ Network Storage Diskless
  • Form Factor: 4-Bay
  • Processor: AMD Ryzen R1600 2-core 2.6 (base) / 3.1 (turbo) GHz
  • Installed Memory: 2GB DDR4 ECC
  • RAID: Synology Hybrid RAID, Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, and RAID 10
  • Model #: RS422+
Synology RackStation RS822RP+ NAS Server with Ryzen 2.2GHz CPU, 32GB Memory, 72TB HDD Storage, 4 x 1GbE LAN Ports, Redundant Power, DSM Operating System Bundle with Rail kit
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  • $5,579.00 
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1pcs For NES-50-12 12V 50W 12V 4.2A Switching Power Supply RS-50-12 Kit
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  • $75.50 
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Synology RackStation RS422+ NAS Server with Ryzen 2.6GHz CPU, 2GB Memory, 32TB HDD Storage, 2 x 1GbE LAN Ports, DSM Operating System Bundle with Rail kit
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  • $2,489.00 
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Synology RackStation RS422+ NAS Server with Ryzen 2.6GHz CPU, 2GB Memory, 32TB SSD Storage, 2 x 1GbE LAN Ports, DSM Operating System Bundle with Rail kit
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  • $7,099.00 
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Synology RackStation RS4021xs+ NAS Server with Xeon 2.1GHz CPU, 64GB Memory, 128TB HDD Storage, 2 x 10GbE LAN Ports, DSM Operating System Bundle with Rail kit
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  • $16,169.00 
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