Showing 19740–19750 of 21968 results

the Fosr12 Fiber Optic Storage Ring Maintains Proper Bend Radius And Prevents Kinking In Excess Fiber Cable. When More Cable Is Required, It Is Simply Released From The Ring. Up To 40 Ft. Of Excess Cable Can Be Stored.

the 4-port Servshare Gives Up To Four Workstations Access To A Single Cpu. Kv754a Is Compatible With Many Other Servswitch Devices, So You Can Add Multiple Points Of Access To Those Applications.

Black Box ServSwitch KV9116A KVM Switch - 16 x 1 - 16 x HD-15 Keyboard/Mouse/Video - TAA Compliance

Support Vlan Tagging And Spanning Tree Passthrough. Include Link-loss-learn (lll) Feature For Fast Network Recovery. Unlike The Ethernet Switches In Your Wiring Closet Or Computer Center, The Ethernet Switches At The Edges Of Your Network Have To Put Up With The Bumps, The Dirt, The Dampness, And The Temperature Fluctuations That Happen Out In The Real World. This Is Where Heavy-duty Edge Switches From Black Box Comes In.these Heavy-duty Edge Switches Are Tough, 6-port Copper Ethernet Switches That Enable You To Expand Your Network Even Into Harsh Environments Such As Factory Floors Or The Outdoors. They''re Robust, They''re Easy To Set Up, And They''re Available With A Vast Array Of Power And Durability Options.what''s More, You Can Daisy-chain Heavy-duty Edge Switches Together Indefinitely, Making Them Ideal For Applications Such As Traffic Signals Where Many Switches Are Needed Over A Long Distance.built Tough!all Heavy-duty Edge Switches Come In A Sturdy Steel Case That Withstands Heavy Use. Plus They''re Available In Three Versions To Adapt To Nearly Any Environment. Because All Three Types Work Together Seamlessly, You Can Use Inexpensive Standard Heavy-duty Edge Switches In Protected Office Environments And Choose The More Robust Hardened Or Extreme Heavy-duty Edge Switches For Harsh Locations At Your Network''s Edge.standard Edge Switches: For Use In Clean, Temperature-controlled Environments Such As Offices And Wiring Closets. Feature The Same Heavyweight Metal Case As Our More Robust Models. Hardened Edge Switches: For Use In Dusty Or Dirty Environments - Ideal For Demanding Industrial Applications. Rated For A Temperature Range Of -13 And +140° F (-25 And +60° C). The Metal Case Functions As A Heat Sink So No Internal Airflow Is Needed For Cooling. Sealed Case Resists Contaminants Such As Dust, Dirt, Moisture, Smoke, And Insects. Extreme Edge Switches: Robust Units For Outdoor Use Require Only Protection From Direct Rainfall Or Standing Water. Ideal For Applications Such As Traffic Signal Control, Or For Sensors Or Surveillance Cameras In Outdoor Plants. Rated For Above-the-ceiling Plenum Installation. Rated For An Extreme Temperature Range Of -40 To +167° F (-40 To +75° C). Feature A Sealed Case, Which Uses Its Own Metal Shell As A Heat Sink. Multiple Power Options. Standard Models Come With Ac Power Adapters Only, In A Choice Of 115 Or 240 Vac. Ac-powered Hardened And Extreme Switches Feature Robust 100- To 240-vac Power Supplies. Dc-powered Hardened And Extreme Units Have Internal Screw Terminals For Connecting Dc Power. You Can Even Provide Redundant Power Input With The Optional Dual-source Cable Kit. Easy To Set Up.heavy-duty Edge Switches Are Literally Plug-and-play. Their Copper Ports Are Autosensing For Speed And Duplex, Adjusting To The Connected Device Automatically. Plus, The Ports Feature Auto Mdi/mdi-x, Eliminating The Need For Crossover Cables.each Switch Has Two Full Sets Of Led Indicators: One Set On The Front For Viewing Convenience When The Switch Is Din Rail Or Wall-mounted And One Set Mounted In The End Next To The Media Ports For Easy Viewing When Units Are In A Rackmount Tray.heavy-duty Edge Switches Feature Non-blocking Switching Architecture With A 2k Mac Address Table. The 128k Buffer Memory Makes It Easy To Interconnect 10- And 100-mbps Devices.

Uplink/downlink Fault Detection Is Provided By Linkalert™. Autosensing Port Configuration. Full- And Half-duplex Operation. Universal, Autosensing Power Supply. Also Available In 6-port, Single-mode, Sc, And 100base-tx To 100base-fx Models. Connect Ethernet Segments To Fiber Segments Without Using Crossover Cables. With A Black Box Autocross Media Converter, You No Longer Have To Deal With Mismatched Transmit And Receive Cable Pairs. This Converter Contains A Switch That Senses The Type Of Circuit Connected To The Utp Port And Automatically Configures The Port To Match. Because The Utp Side Is Autosensing To Mdi/mdi-x, You Can Use Either A Straight Or Crossed Cable To Connect A Switch Or Nic. The Converter Features Linkalert™, Which Monitors 100% Of Physical Uplink And Downlink Failures And Alerts The Network If The Transmission Fails. This Ethernet Version Of The Autocross Media Converter Is Not Compatible With Autosensing Devices (for Example, A 10-/100-mbps Hub); It Only Works With Standard 10-mbps Devices. Use The Autocross Media Converter Up To 100 Meters (328 Ft.) On The Utp Link And Up To 2 Kilometers (1.2 Mi.) On A Multimode Fiber Link.

Operates Half- Or Full-duplex, Point-to-point, And Transparent To Speed. Attaches Directly To Equipment Ports Or Between Two Cables.

Led Indicates Dc Power Universal 85 - 264-vac Input. It Also Accepts But Is Not Certified For, 120 - 370-vdc Power Extended Operating Temperature Range Of -4 To +158° Finger-safe Terminals

the Pro Switching System 2u Is An Intelligent Ganged Switching System Consisting Of An Ultra-compact 2u 18-slot Chassis And A Selection Of A/b Switching, Controller, And Power Supply Cards. Controller Cards Take Up Only One Slot, And Power Cards Take Up One Slot Or Two Slots For Redundancy, Leaving You With 13 - 15 Slots For A/b Switch Cards. All Occupy One Slot, Except For The Db25 Cards, Which Require Three Slots. Local And Remote Controlthe Advanced Design Of This System Gives Incredible Operational Flexibility And Performance. Switch One Card Individually Or Switch The Entire Chassis Through A Controller Card. You Will Need One Controller Card Per Rack Chassis. If You Plan To Daisy Chain Multiple Chassis, The Controller Card In The First Chassis Controls The Entire System.you Can Choose An Rs-232 Only Controller Card, Which Enables You To Gang Switch Via The Manual Toggle Switch Or With Serial Commands, As Well As An Rs-232/ethernet (snmp) Controller Card, Which Enables You To Switch The Chassis From Anywhere Via An Rs-232 Or Ip Connection. If You Want To Extend Rs-232/ip Control To A Second Daisy-chained Pro Switching System Chassis, Order The Snmp Expansion Controller Card. This Enables You To Send Hardware Control Signals And Control The Daisy-chained System With Rs-232 Messages Through The Rs-232/ethernet (snmp) Controller Card.secure And Fallback Switching.for Fail-safe Operation, All The Cards (except Those Noted) Use Proprietary Latching Or Micro-mirror Relay Switching Technology - Which Means Data Can Continue To Pass Through Even If The Power Has Been Cut Off. Because The Cards Perform Layer 1 Switching, The System Operates Independently Of Data Rates, Protocols, Formats, Or Signal Levels.the Non-latching Fiber Cards Fall Back To A Port C (chassis) To Port A Connection When The Power Fails. When Power Is Restored, The Non-latching Switch Card Reconnects Port C To The Originally Selected Port (a Or B). These Types Of Cards Are Typical When You Want A Fallback Or Failover Connection During Power Outages.each Chassis Also Has A Keyed Switch So You Can Enable/disable Manual Switching From The Front-panel Toggle Switches.control Power.to Power Your Chassis, Order One Or Two External Power Supplies, And The Power Adapter Card. For Backup Power, Add A Redundant Power Supply Card.

black Box Pro Switch 2u External Pw Supply Adapter Card

fills In The Empty Slots In Your Pro Switching System Plus.