SBMC3A32T1S2P1
日期:2020-7-6很多电真空发射机都是以机柜的形式安装,整个发射机是一个完整的电磁系统,除了电磁信号的接口以外,在本系统内要解决各种的兼容问题,不管是热辐射还是电磁辐射都要满足发射机系统的要求。真空管发射机用发射单元、高压电源及PFC各自封装成箱体,箱体单元之间通过电缆连接,每个单元都要满足发射机系统的兼容性要求,由于箱体之间散热条件严酷,所以采用密闭的水冷散热。
发射单元箱体设计时,为了满足总质量和强度第要求,用硬铝作为面板材料。拼装时,把一部分不拆分面板进行焊接(硬铝的搅拌摩擦焊),提高了电磁兼容的密闭性、箱体的结构强度及箱体内部的空间利用率。
电真空发射机电磁干扰途径有传导耦合、感应耦合、共阻抗耦合和辐射耦合。其中感应耦合又分为电传导感应耦合和磁感应耦合。电传导感应耦合指,若两导线之间存在分布电容,当其中一根导线上的电压通过电容耦合到另一根导线上时,就会对该导线所连的敏感电路形成干扰,其干扰电压与源电压、频率、两导线间的分布电容以及电路阻抗有关,这些参数决定了电路的干扰强弱。
步进电机的虚拟仪器控制系统由PC,FTDIUSB模块,电压转换模块,达林顿管和步进电机组成。软件由LabVIEW编辑完成并通过一根USB数据线直接控制USB模块。因为USB模块的输出电压是3.3伏,而电机驱动模块需要的输入电压是5伏,所以需要一个电压转换模块来转换电压和电流。
电机驱动模块采用的是ULN2803A8排达林顿管,每个芯片可以控制2个步进电机。步进电机采用的是4相12伏步进电机。因为步进电机的工作电压为12V,对于达林顿管单条引脚来说,负载较大。
模块初始化程序首先要启用设备,系统软件采用的是获取设备名称的方式。值得一提的是,每次使用FTDIUSB模块都必须清理前一次运行系统缓存,最好的方式就是在程序打开设备后放置一个重置模块。在重置设备以后再设置设备的运行模式。
在实际应用中,只要按电机的使用说明按一定规律给电机各个引脚加电压,所以USB模块在运行的时候,相应的引脚只要给出相应的高低电平就行了。
分析其原因有两种可能,一是炮线离电缆太近,爆炸机的高压放电通过电磁感应影响电缆数据传输。二是爆炸机的高压起爆电流通过爆炸机内部串音影响到井口信号等辅助参数回路,进而通过地震电缆传输时干扰电缆的正常传输,而产生严重的传输错误。
实验表明后者的可能性更大。地震电缆的线间电容对数据信号的传输有很大的影响,数字信号的传输受电容影响。模拟部分遥测地震电缆的模拟部分,实际上只是采集站到检波器串之间很少的一部分。而正是这一部分,在很大程度上影响到采集质量,决定着电缆的性育旨。总的来说,地震电缆与采集质量密切相关,应引起地球物理工作者的高度重视。 外界的随机干扰工频干扰,环境噪声等,很容易通过这一部分直接作用于地震信号,影响信号的真实性。现行地震电缆大多采用夹片式连接器与检波器串相连接,由于它暴露在外,极易产生漏电和串人外界干扰。更为严重的是,夹片式连接器,因插把上的铁青铜等材料制成的弹簧片,极易老化而失去弹性,造成接触不良和接触电阻差异,影响各道阻抗的一致性从而影响各道的输人信号幅度。夹片的接触电阻还会随外部微振干扰或地震放炮激发振动而随机变化,形成干扰源,严重影响采集质量。
过充电对正极材料的破坏性极大。充放电过程仅进行了2次,就不能再进行充电,且前2次的充放电效率极低,只有1.53和1.67,充电电压平台也急剧下降。此时,电池已经完全损坏。分析有以下原因:第一,过充电时铝箔容易发生局部点蚀,导致内阻增加,容量下降。在极端情况下,由于铝箔只有15Lm厚,有可能使其受到破坏,导致电池失效。第二,由于电池的充放电过程是一个氧化还原过程,大电流过充电时,PPySiO复合正极材料就会被过氧化,聚合物的微观组织结构发生破坏,导致掺杂阴离子“无路可回”,因此放电容量极低。
对电池进行小电流正常充放电时,电池正常循环148h后依旧保高分子材料科学与工程持了较高的容量和接近100的充放电效率。可见,锂聚合物二次电池适宜在小电流充放电制度下进行正常的测试。
复合材料作正极,组装成锂聚吡咯二次电池。初步探讨了集电极隔膜厚度正极片成型压力及过充放电对电池性能的影响。结果表明,以铝箔为集电极制备的电池,其比容量和充放电效率较以铝网作集电极为优。正极片的成型压力过大或过小都会影响电池的综合性能,经过筛选比较,得出当压力为20MPa时,电池性能最优。隔膜的薄厚对正极材料的容量影响不大,但对充放电效率的影响显著。隔膜越厚,循环效率越低;隔膜越薄,循环效率越高。
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*NEW* CISCO ASR1001-X with 20G Throughput ASR1001X-20G-K9 2YearsWnty 16G RAM
Lot of 5 Cisco IP Phone CP-7941G Unified VOIP Phones
Lot Of 3 Cisco 15454-DS1-14
Lot Of 2 Cisco E100T-12 port Ethernet Card. Cisco15454
Cisco WS-SUP720-3BXL BUN + Catalist 6500 Supervisor 720 MSFC3 WS-F6K-PFC3BXL 1GB
Cisco DS-X9302-14K9 Mds 9000 2-port Ge 14-port Fc
Cisco WS-SUP720-3B Supervisor 720 MSFC3 WS-F6K-PFC3B
Cisco Aironet Ethernet Power Injector DPSN-35FB A 341-0212-01
Cisco DS-X9148
Cisco WS-SUP720-3B Supervisor 720 MSFC3 WS-F6K-PFC3B 1GB + 512MB MSFC3 DRAM
Cisco WS-SUP720-3B Supervisor 720 MSFC3 WS-F6K-PFC3B 1GB + 1GB MSFC3 DRAM
Cisco WS-SUP720-3A Supervisor 720 MSFC3 WS-F6K-PFC3A
NEW Cisco GLC-LX-SM-RGD= 1-Port SFP (mini-GBIC) Transceiver Module 1000Mbps
NEW GLC-LX-SM-RGD= 1-Port SFP (mini-GBIC) Transceiver Module 1000Mbps Single
Cisco CP-9971-C-K9 Unified IP Phone VOIP With CP-CAM-C Video Camera Video Phone
Cisco Catalyst 2960G Series WS-C2960G-24TC-L £120.00 + VAT
Cisco 7606 Router Chassis, FAN + WS-SUP720-3B 1GB DRAM, PWR-2700-AC Power Supply
LOT OF 7 CISCO NM-1FE-2W NM-1E1R NM-1E2W ATM 1A-T3 NM-ATM-E1 4E1-IMA
Cisco XENPAK-10GB-LR+ 10 Gigabit Ethernet Transceiver
CISCO WS-X6066-SLB-APC - Good Condition
Cisco 1FE2W (1FE 2W) modulo con una Porta Fast Ethernet - - RIBASSATO
Cisco 3825 Router +NM-1FE2W-V2 ADVIPSERVICESK9-M CCNA/CCNP LABS
Cisco 3725 + NM-8A/S CCNA/CCNP LABS Router
Cisco 3725 + NM-4A/S CCNA/CCNP LABS Router
Cisco 1841 C1841-SPSERVICESK9-M CCNA CCNP CCIE labs
Cisco NM-1GE Gigabit Ethernet Module for 2600 3600 3700 3800 Routers CCNA CCNP
Cisco WS-X6516A-GBIC Catalyst 6500 GBIC Switching Module
Cisco Router 3600 Series 3640 +NM-4T+NM-1CE1B+NM-1FE-2CE1-B/U
CISCO NM-16A ASYNC (2511, 2511-RJ) TERMINAL ACCESS SERVER CCNA CCNP CCIE LABS
Cisco Router 3600 Series 3640 +NM-4T+NM-1CE1B+NM-1FE-2CE1-B/U
CISCO 24 PORT CATALYST 2960 SWITCH WS-C2960-24-S FREE UK MAINLAND DELIVERY
Cisco PVDM2-64 (PVDM2-64=) For CCNA CCNP CCIE Voice & Collaboration Lab
Cisco NME-WAE-522-K9 Network Module for Cisco CCNA CCNP CCIE
CISCO NM-HDV-1E1-30E VWIC 1MFT-E1 CCNP CCIE VOICE LAB
Cisco VPN 3000 Concentrator Model Number CVPN3000 CCNA/CCNP
Cisco PIX-515E CCNA/CCNP
Genuine Cisco 34-1977-03 A0 / PSA18U-480C AC Power Adapter
2 x CISCO WS-X3500-XL GigaStack GBIC
CISCO SECURE PIX 525 FIREWALL 68-1098-02
X 2 CISCO WS-CE500-24TT 24-PORTS EXTERNAL MANAGED SWITCH
CISCO for LAB CCNA CCNP 2620, 2650XM ROUTER 3550-48 3548 SWITCH NM-8AS
NEW - NOT ORIGINAL BOX - CISCO ASR1002-PWR-DC ASR1002 DC Power Supply
Cisco NM-32A (2511, 2511-RJ or NM-16A) Terminal Access Server CCNA CCNP CCIE
Cisco 2801-V/K9 VoIP Voice Bundle Router + PVDM2-8
Cisco 2801-SRST/K9 VoIP Voice Bundle Router + PVDM2-8
Cisco 2801-SEC/K9 Router 256MB RAM 64MB Flash Advanced Security IOS VPN 3DES AES
Cisco 2801-HSEC/K9 Security Router mit AIM-VPN/EPII-PLUS Module 256MB RAM
Cisco 2801 Router 128MB RAM 64 Flash with ADVANCED ENTERPRISE K9 IOS
WS-C3650-48PD-L 2 PWR-C2-1025WAC Switch Cisco PoE+ 10G 3650 2960X 3850 Catalyst
Smart 15-11062-02 Router Memory 2GB DDR2 244-Pin Mini DIMM For Cisco
Cisco wireless access point Cisco AIR-LAP1142N-E-K9
Cisco Router Mod 870
CISCO VIC-2E/M 2-Port Voice Interface Card, Tested
**LOT OF 5** Cisco 1 PORT WAN INTERFACE CARD P/N: WIC-1T
Cisco CSS 11503 with SSL and switch modules
CISCO CAB-OCTAL-ASYNCHRONOUS X 8
Cisco 7960G CP-7960G Unified IP Office Business Telephone VoIP Phone G/B
New Cisco Compatible GLC-LX-SM-RGD 1000Base-LX 10KM SM SFP Transceiver module
CISCO CAB-STACK-50CM - 1M X 5
New XFP-10GLR-OC192SR -10GBase-LR 1310nm 10KM XFP(Cisco 100% Compatible )
Cisco Catalyst WS-C3750-48PS-E 3750-48 Switch 48x PoE + 4 SFP Ports L3 EMI IOS
*Ten(10)* x Cisco CP-7911G Unified PoE IP Phone Loaded With SCCP File
CISCO CONSOLE CABLE - 72-3383-01 X 19
Cisco Meraki MS220 48LP
CISCO C3KX-NM-1G 1GBE NETWORK MODULE FOR 3560X/3750
CISCO ASA 5510 Security Plus incl. Modul SSM-10 Intrusion-Detection
Cisco AIR-LAP1242AG-E-K9 LWAPP 1242AG 1242 Access Point
Cisco AIR-AP1242AG-E-K9 2.4GHz & 5GHz Access Point upgraded AIR-LAP1242AG-E-K9
CISCO RCKMNT-REC-1RU X 5
**LOT OF 5** Cisco WIC-2T 2-Port Serial Network Module P/N: WIC-2T
Cisco Catalyst WS-C3750X-24T-S Stackable 24x Port GIGABIT Switch
NEW Cisco C3KX-NM-1G FourGbE network mod f. 3560-X 3750-X Catalyst Switches ung
Cisco Catalyst 3560 Series PoE-48 Switch WS-C3560-48PS-S V05
CISCO 860VAE Series CISCO867VAE-K9 V02 Security Router VPN
Cisco Catalyst 5500 19" Rack Mount Kit
CISCO 1941 PSU - 341-0324-01
Cisco Catalyst 3560 PoE Switch WS-C3560-48PS-S V07
CISCO IP Phone 7965G 6 Line - EXCELLENT CONDITION
Cisco Linksys Gigabit Managed Switch SRW2048 48x 100/1000 4x SFP + MiniGBIC
Cisco firewall Pix 515 usato
Cisco Asa 5505 Sec-Plus
Cisco 877 Integrated Services Router
Cisco VIC2-FXS
CISCO WS-C2960X-48FPS-L 48 PORTS POE+ GE+4 SFP, SWITCH - ORIGINAL BOX
Replacement Faceplate for Cisco 3745 Router
Cisco C892FSP-K9 Gigabit Ethernet Security Router w/SFP - 9 Ports - Management
Replacement Lower Faceplate for Cisco 3750X-48 Port PoE Switch
Replacement Faceplate for Cisco 3750X-12S / 3750X-12-E Switch
Cisco Compatible 100BASE-FX SFP Module for Gigabit SFP Ports
Cisco 6009/6509 19" Rack Mount Kit
Cisco CAB-RPS2300-E-RF Cable RPS 2300 -E Ref Cisco Certified Refurbished Equipme
Cisco Catalyst WS-C3560E-48TD-S-RF 48x GIGABIT + 2x X2 10 GBIT Switch Refurbishe
NEW Cisco NM-4E - 4 Port Ethernet Modul für 2600/3600 NEU
NEW Cisco NM-16A/S 16-port Asynch/Synch interfaces Network Module NEU OVP BOX
Cisco IE-3000-8TC-E Industrial Ethernet Switch 4xExpan 2x SFP 8x 10/100Base-TX
NEW Cisco SF200E-24P SMALL BUSINESS CSB 24x 10/100 PoE PORT SMART SWITCH NEU BOX
NEW Cisco Catalyst WS-C2960+24PC-L Switch 24 FE PoE, 2 SFP or 1000Base-T Uplinks
CISCO AIR-LAP1242AG-E-K9 802.11AG LWAPP AP DUAL 2.4 5GHZ
Cisco ISA570 Integrated Security Appliances without License
Cisco 7970G Eight Line Color Display Unified IP, CP-7970G, New
*Ten(10)* x Cisco CP-7912G Unified IP Phone- No Power Supply
Lot of 11 Genuine Cisco CVR-X2-SFP V02 TwinGig X2 to SFP Converter Module
Cisco CP-8831-EU-K9 Unified IP Conference Station VoIP Phone
Replacement Lower Faceplate for Cisco 3560X-48 Port PoE Switch
CISCO AIR-AP1242AG-E-K9 CISCO AIRONET 1242AG 802.11A/B/G ACCESS POINT
CISCO (WS-C2960X-48TS-L) CATALYST 2960-X 48 GIGE, 4 X 1G SFP, LAN BASE WS-C2960X
Cisco ASA 5500 Series Advanced Inspection and Prevention Module
Cisco Linksys WVC210 Wireless-G Pan Tilt Zoom (PTZ) Internet Video Camera kamera
CISCO ATA187-I1-A SIP Analog Tel. Adaptor ATA186-I1 OVP
CISCO - Liteon 125W Power Supply PSU PN: 341-0065-01
CISCO PWR-RPS2300 + 2 x C3K-PWR-750WAC
We buy Cisco **** WS-C2960X-48FPS-L **** 48 port 2960 (MO)
We buy Cisco ***** VS-S2T-10G ***** . VS-SUP2T-10G emgine
We buy Cisco **** ASA5525-K9 Adaptive Security ASA5525-X
We buy Cisco ***** VS-S2T-10G ***** . VS-SUP2T-10G Tel: 832-343-0718 (MO)
We buy Cisco ISR4331/K9 **** 4331
We buy Cisco **** WS-C3650-48FS-S **** 48 port WS-C3650 , 3650 series
We buy Cisco **** WS-C2960X-48TD-L **** 48 port 2960
We buy Cisco **** WS-C2960X-24PD-L **** 48 port 2960
We buy Cisco **** ASA5515-K9 Adaptive Security ASA5515-X
Cisco PWR675 Redundant Power Supply (RPS) with One RPS Cable
We buy Cisco **** WS-C2960X-48LPD-L **** 48 port 2960 (MO)
We buy Cisco **** WS-C3650-48PS-S **** 48 port WS-C3650 , 3650 series
We buy Cisco **** WS-C3650-24PS-S **** 24 port WS-C3650 , 3650 series
We buy Cisco **** ASA5545-K9 Adaptive Security ASA5545-X
We buy Cisco **** WS-C2960XR-48FPD-I **** 48 port 2960
We buy Cisco **** WS-C2960X-48FPS-L **** 48 port 2960
We buy Cisco **** WS-C3850-24S-S Switch
We buy Cisco **** WS-C2960X-48FPD-L **** 48 port 2960 (MO)
We buy **** Cisco WS-X6908-10G-2T **** 6908 switch (MO)
We buy Cisco **** NIM-2MFT-T1/E1 **** 4331,4321,4451,4400
We buy **** Cisco WS-X6908-10G-2TXL **** 6908 switch (MO)
We buy Cisco **** WS-C3850-12S-S Switch
We buy Cisco *** WS-C3850-24XU-S ***** 3850-24X
we buy Cisco **** WS-C3650-48FD-S *** 3650
CISCO WIRELESS SETUP. AIR-WLC4404-100-K9, WS-C3550-24PWR-SMI, AIR-LAP1252AG-E-K9
CISCO 2500 FLASH MEMORY 8 MB
Cisco 1760 Modular Access Router, CISCO1760
Firewall Cisco Small Business ISA550 - Ethernet Gigabit - Wi-Fi N - tarif 441€
Routeur CISCO série 800 type 888 - Integrated Services Routers
Cisco Router 3630 (3600 series)
Cisco ASA5505 Power Supply, ASA5505-PWR-AC, 3rd Party
Cisco 2960 Series 48 Port Switch, WS-C2960-48TC-L
Cisco ASA ASA5505-50-BUN-K9
CISCO CCNA CCNP LAB 2X 1841 V06 ROUTERS 2X IP PHONES 1X3560-24PS-S L3 SWITCH
1pcs Cisco WS-C2960-48TC-S 48-Port Smart switches
Cisco SPA 508G Eight Line IP Phone, SPA508G, Scratch and Dent
1PCS Cisco WS-F6700-DFC3BXL 6700 Series Distributed Forwarding Card Tested
Cisco CP-8831 Speaker Set
HP Gigabit Switch Cisco Catalyst WS-CBS3120G - S
New Sealed Cisco WS-C3850-12S-E Cisco Catalyst 3850 12 Port GE SFP IP Services
1pcs Cisco Catalyst WS-C2960-24TC-S Rack Mountable 24 Port Switch
New Sealed Cisco WS-C3850-12XS-E Catalyst 3850 12 Port 10G Fiber Switch IP Base
Cisco CP-8831 Ip Conference Speaker New In Box
New Sealed Cisco WS-C3850-12XS-S Fiber Switch IP Base Fast Shipping
Cisco 2921 Security Bundle. New In Box
Cisco 2960 Series 24 Port Switch, WS-C2960-24TC-S
Cisco CP-7821-K9 Ip Phone New In Box
LOT of 2 Cisco 1800 Series Model 1840 Router
CISCO 3845 ISR ROUTER WITH PVDM2-64 & DUAL PWR-3845-AC CCNA CCNP CCIE LAB
Cisco WS-C3560G-24TS-S Switch 10/100/1000 4 SFP ports 3560G SERIES
CISCO CSS5-SSL-K9 MODULE CSS11503-AC SWITCH
CISCO PWR-4502 4500 SERIES POWER SUPPLY NEW OPEN BOX
Cisco WIC-1B-S/T-V3 ISDN Interface Card
Cisco Systems AS54-DFC-8CE1
Cisco PIX-VAC PLUS 74-3176-01 VAC+ PIX ccna ccnp ccie lab VAC+ 515 515e
Cisco Systems AS54-DFC-60NP
Cisco SPA-2XCT3/DSO 2-Port Channelized T3 Shared Port Adapter
CISCO 7204 VXR ROUTER with PA-2FE-TX INPUT/OUTPUT CONTROLLER PA-A3-E3 PSU
CISCO JOBLOT 4 X CISCO 878-K9 ROUTERS WITHOUT POWER CUBE
Cisco WIC-1SHDSL-V3 card CCNA VOICE CCIE (NEW)
Cisco CSS5-SCM-2GE FOR 11500 Content Services Switch Control Module
CISCO NM-HDV-1E1-30 FULLY POPULATED VWIC 1MFT-E1 CCNP CCIE VOICE LAB
Cisco PIX-535 AC Power Supply PIX-535-PWR-AC
Cisco ME-3400-24TS-A Metro Fast Ethernet Access Switch
Screws for STK-RACKMOUNT-1RU, RCKMNT-1RU, Others (4)
QSFP-40G-SR-BD Cisco 40GBASE-SR-BiDi, duplex MMF Modules 10-2945-01 new sealed
CISCO X2-10GB-LR 10GBASE-SR FIBER MODULE 10 available Manufacturer Refurbished
Cisco 1800/1900/2800/3800/3900 Series 2-Port WAN Interface Card
CISCO CATALYST 3650 24 PORT DATA 2X10G UPLINK IP BASE IN
Cisco Dell HP lame Catalyst cable d'empilage 3120 - 74577-0051 - 37-0890-01
Cisco Cable Systems cab-V35 - Cod. 72-0791-01/V35 DTE
10 CISCO GLC-SX-MM 30-1301-02 850NM 1000BASE-SX GBIC TRANSCEIVER NEW IN BAG
Cisco IP Conference Station 7936 (CP-7936) New (2)
Rack Mount Kit for a Nexus 7018
Cisco IP Conference Station 7936 (CP-7936) New
Cisco Catalyst 4500 Series Supervisor Engine V
Cisco ME-FANTRAY JWA ME3600X 3800X Fan Tray 800-32757-01
Cisco NM-2CT1 2 Port Channelized T1/ISDN-PRI Network Module
Cisco XFP10GER-192IR-L, 10-2545-01 Transceiver
Cisco Systems 7942 IP VoIP Office Phone CP-7942G
CISCO SFP-10G-SR Original V02
L-880-AIS= original cisco - lizenz
Cisco SG300-10MP V02 SRW2008MP-K9 8GE POE 124W 2GE
Cisco CIVS-PWRPAC-12V for 2500 2500E 4300 4500 4500E Cameras
Cisco IPS-4GE-BP-INT for IPS-4260 IPS4270
Genuine OEM Cisco WS-G5482 1000 Base-T GBIC Converter
Cisco Catalyst Express WS-CE500-24LC 24 x 10/100 4 x PoE Switch
CISCO N20-PAC5-2500W V04 CISCO UCS 5108 PSU
CISCO UCS 2104XP UCS FABRIC EXTENDER (N20-I6584 V04)
CISCO N20-FAN5 V02 UCS 5108 BLADECENTER (800-30208-06)
CISCO N20-B6625-1 UCS B200 M2 Blade 2xE5645 32GB RAM VIC 68-3229-10
Cisco RV130-K9-NA RV130 VPN Router - 5 Ports - SlotsGigabit Ethernet
Cisco EHWIC-VA-DSL-M Module Cisco Refurbished EHWIC-VA-DSL-M-RF
Cisco SLM2048T-NA SG200-50 50 Ports 10/100/1000Base-T Gigabit Smart Switch
Cisco WS-C2960S-48FPS-L SWITCH WS-C2960S-48FPSL-RF AS NEW Cisco Refurbished
Cisco 3825 router 512mb/256 flash ADV ENT IOS PVDM2 64
Cisco NPE-G1 Network Processing Engine 64MB Flash Gigabit GBIC 7200 VXR 59653
Cisco WS-C3550-12G 12 Port w/10x GBIC Gigabit Layer 3 Switch 3550-12G CCNA IPv6
QUANTITY Cisco IP Phone 7914 Expansion Module (CP-7914)
New Cisco CP-7911G Unified IP Phone
Cisco Meraki Z1
Cisco WS-C3750G-24TS-S1U Switch 24-GE Ethernet 10/100/1000 4xSFP GE Stackable
New Cisco Linksys SRW2024 Fan Quite 12dBA Noise Satisfaction Guaranteed!
Genuine Cisco GLC-LH-SM Cisco 1000BASE-LX/LH SFP Tranceiver Module
AIR-ANT1728 2.4GHz 5.2dBi Omni Ceiling Antenna RP-TNC
Cisco Catalyst WS-C2960-48TC-L 48-Ports Switch IOS 15 rack ears 48-FE 2-GE
Cisco Catalyst 2820 24Port 2Slot Modular Switch WS-C2828-A With Fastmate FDDI
Cisco Catalyst WS-C2960-24TC-L 24-Ports Switch IOS 15 rack ears 24-FE 2-GE
CISCO 806 Broadband Router 800 Series No Power Supply FAST SHIPPING!!
Cisco UCS 2104XP Fabric Extender
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