intel core m3-7y30 | Newegg.com

HP EliteBook 840 G7 14" FHD Intel Core i5-10310U 1.7 GHz up to 4.4 GHz 16GB DDR4 256GB SSD Intel UHD Graphics Windows 11 Pro Laptop, Silver, With minor scratches and dents
- 24M80UP-I010

Refurbished HP EliteBook 840 G7 14" FHD Intel Core i5-10310U 1.7 GHz up to 4.4 GHz 16GB DDR4 256GB SSD Intel UHD Graphics Windows 11 Pro Laptop, Silver, With minor scratches and dents - 24M80UP-I010

Memory: 16GB
Type: Mainstream
Resolution: 1920 x 1080
SSD: 256 GB
Model #: 24M80UP-I010-RB-

$269^.99 –
Free Shipping

Compare

Lenovo IdeaPad S340 Notebook, 14" FHD Display, Intel Core i5-1035G1 Upto 3.6GHz, 8GB RAM, 256GB NVMe SSD, HDMI, Card Reader, Wi-Fi, Bluetooth, Windows 10 Pro

Quick View

Lenovo IdeaPad S340 Notebook, 14" FHD Display, Intel Core i5-1035G1 Upto 3.6GHz, 8GB RAM, 256GB NVMe SSD, HDMI, Card Reader, Wi-Fi, Bluetooth, Windows 10 Pro

Memory: 8 GB
SSD: 256GB
GPU/VPU: Intel UHD Graphics
Brand: Lenovo
Model #: S340i510-8256nP

$699^.99 –
Free Shipping

Compare

Lenovo ThinkCentre M70q Gen 2 11MY001SUS Desktop Computer - Intel Core i5 11th Gen I5-11400T Hexa-core (6 Core) 1.30 GHz - 8 GB RAM DDR4 SDRAM - 256 GB M.2 PCI Express NVMe SSD - Tiny - Black - Intel - OEM

Quick View

Lenovo ThinkCentre M70q Gen 2 11MY001SUS Desktop Computer - Intel Core i5 11th Gen I5-11400T Hexa-core (6 Core) 1.30 GHz - 8 GB RAM DDR4 SDRAM - 256 GB M.2 PCI Express NVMe SSD - Tiny - Black - Intel - OEM

Type: Student / Home Office
Form Factor: Tiny
LAN Speed: 10/100/1000Mbps
WLAN: 802.11ax Wireless LAN
Model #: 11MY001SUS

$1,360^.79 –
Free Shipping

Compare

Lenovo ThinkCentre M700 Tiny 8GB 128GB SSD Intel Core i3-6100T X2 3.2GHz Win10, Black

Quick View

(1)

Refurbished Lenovo ThinkCentre M700 Tiny 8GB 128GB SSD Intel Core i3-6100T X2 3.2GHz Win10, Black

Type: Business Desktops & Workstations
Form Factor: Tiny
LAN Speed: 10/100/1000Mbps
WLAN: 802.11ac Wireless LAN
Model #: 10HY0021US-RB

$229^.99 –
Free Shipping

Compare

Lenovo ThinkCentre M70q Gen 6 13A40029US Desktop Computer - Intel Core Ultra 5 225T - 16 GB - 512 GB SSD - Tiny - Black - Intel Q870 Chip - Windows 11 Pro - Intel DDR5 SDRAM - English Keyboard - IEEE

Quick View

Lenovo ThinkCentre M70q Gen 6 13A40029US Desktop Computer - Intel Core Ultra 5 225T - 16 GB - 512 GB SSD - Tiny - Black - Intel Q870 Chip - Windows 11 Pro - Intel DDR5 SDRAM - English Keyboard - IEEE

Type: Student / Home Office
Brand: Lenovo
Part Number: 13A40029US
Usage: Business / Mainstream / Work / Business
Model #: 13A40029US

$1,390^.31 –
More options from $1,390.31 - $2,253.77
Free Shipping

Volume Discounts:$1,329.81 - $1,390.31

Compare

Lenovo ThinkCentre M710Q Tiny Form Factor Desktop Computer, Core i3-6100T up to 3.2GHz, 8GB DDR4, 256GB Solid State Drive, Windows 11 Pro

Quick View

Refurbished Lenovo ThinkCentre M710Q Tiny Form Factor Desktop Computer, Core i3-6100T up to 3.2GHz, 8GB DDR4, 256GB Solid State Drive, Windows 11 Pro

Type: Business Desktops & Workstations
Form Factor: Tiny
CPU Name: Intel Core i3-6100T
GPU/VGA Type: Integrated Graphics
Model #: NERRFBAB0FTSLQVW8-UT

$158.39
$148^.39 –
Save: $10.00 (6%)

Compare

Lenovo ThinkCentre M73 SFF Core i5-4570 3.20GHz 8GB 500GB SATA Desktop Grade A

Quick View

Refurbished Lenovo ThinkCentre M73 SFF Core i5-4570 3.20GHz 8GB 500GB SATA Desktop Grade A

Monitor: Monitor not included
CPU Type: Intel Core i5 4th Gen
Model #: 647697374610

$104^.44 –
More options from $104.44 - $289.99
Free Shipping

Volume Discounts:$99.44 - $104.44

Compare

Lenovo ThinkPad E14 Gen 7 21SX0038US 14" Touchscreen Notebook - WUXGA - 60 Hz - Intel Core Ultra 7 255H - 16 GB - 512 GB SSD - English Keyboard - Black - Intel Chip - 1920 x 1200 - Windows 11 Pro

Quick View

Lenovo ThinkPad E14 Gen 7 21SX0038US 14" Touchscreen Notebook - WUXGA - 60 Hz - Intel Core Ultra 7 255H - 16 GB - 512 GB SSD - English Keyboard - Black - Intel Chip - 1920 x 1200 - Windows 11 Pro

Memory: 16GB
Type: Home / Personal
Resolution: 1920 x 1200
Brand: Lenovo
Model #: 21SX0038US

$1,859^.43 –
More options from $1,859.43 - $1,979.94
Free Shipping

Volume Discounts:$1,850.13 - $1,859.43

Compare

Best ever offer ! Lenovo ThinkCentre M73 SFF | Desktop computer Core i5 4th Gen 4570 | 3.20 Ghz (Upto 3.60 Ghz)|8GB Memory 128GB SSD | Gaming Keyboard & Mouse |Windows 10 Home -64 Bit |WiFi Adapter

Quick View

Form Factor: Slim/Small Form Factor
WLAN: 802.11g Wireless LAN
Color: Black
Processor Main Features: 64 bit Processor
Model #: Lenovo M73 SFF GAM KEY

$319^.99 –
Free Shipping

Compare

Lenovo 14.0" Intel Core i7-5600U 8GB Memory DDR3L 1600 240 SSD Windows 10 X1 Carbon

Quick View

Refurbished Lenovo 14.0" Intel Core i7-5600U 8GB Memory DDR3L 1600 240 SSD Windows 10 X1 Carbon

Processor Name: Intel Core i7-5600U
Memory: 8GB
SSD: 240
Brand: Lenovo
Model #: NE5-31697

$243^.38 –
Free Shipping

Compare

Lenovo ThinkCentre M75q Gen 2 11JJ007TUS Desktop Computer - AMD Ryzen 5 PRO 4650GE Hexa-core (6 Core) 3.30 GHz - 8 GB RAM SDRAM - 256 GB M.2 PCI Express SSD - Tiny - Raven Black - Windows 10 Pro 64-bi

Quick View

Lenovo ThinkCentre M75q Gen 2 11JJ007TUS Desktop Computer - AMD Ryzen 5 PRO 4650GE Hexa-core (6 Core) 3.30 GHz - 8 GB RAM SDRAM - 256 GB M.2 PCI Express SSD - Tiny - Raven Black - Windows 10 Pro 64-bi

Type: Student / Home Office
Processor: AMD Ryzen 5 PRO 4650GE 3.30 GHz
Monitor: Monitor not included
Parts: 3 Year
Model #: 11JJ007TUS

$749^.99 –
More options from $735.00 - $749.99
Free Shipping

Compare

Dell Precision 3000 3570 15.6" Mobile Workstation - Full HD - 1920 x 1080 - Intel Core i5 12th Gen i5-1245U Deca-core (10 Core) 1.60 GHz - 16 GB Total RAM - 256 GB SSD - Intel Chip - Windows 11 P

Quick View

Used - Good Dell Precision 3000 3570 15.6" Mobile Workstation - Full HD - 1920 x 1080 - Intel Core i5 12th Gen i5-1245U Deca-core (10 Core) 1.60 GHz - 16 GB Total RAM - 256 GB SSD - Intel Chip - Windows 11 P

Series: 3000
Screen Size: 15.6"
Touchscreen: Non-Touch Screen
Resolution: 1920 x 1080
Model #: X8M37

$369^.00 –
Free Shipping

Compare

Lenovo IdeaPad Slim 3i 15.6" FHD Laptop, Intel Core 3 N355, 8GB LPDDR5 RAM, 1.12TB Storage (128GB UFS+1TB Dock), Intel Graphics, Wi-Fi 6, Camera Privacy Shutter, Win 11 Pro, Arctic Grey

Quick View

Lenovo IdeaPad Slim 3i 15.6" FHD Laptop, Intel Core 3 N355, 8GB LPDDR5 RAM, 1.12TB Storage (128GB UFS+1TB Dock), Intel Graphics, Wi-Fi 6, Camera Privacy Shutter, Win 11 Pro, Arctic Grey

Processor Name: Intel Core 3 N355
GPU/VPU: Intel Graphics
Memory: 8GB
SSD: 128GB
Model #: 199273165209_New_8_128_1_yn_L2

$489^.00 –
Free Shipping

Compare

Lenovo IdeaPad 3 15ITL6 15.6" Laptop Intel Core i5-1135G7 12GB Ram 512GB SSD W10H

Quick View

Refurbished Lenovo IdeaPad 3 15ITL6 15.6" Laptop Intel Core i5-1135G7 12GB Ram 512GB SSD W10H

Memory: 12GB
SSD: 512GB
Brand: Lenovo
Operating System: Windows 10 Home
Model #: 82H800KAUS

$919^.99 –
Free Shipping

Compare

Lenovo IdeaPad S340 Notebook, 14" FHD Display, Intel Core i5-1035G1 Upto 3.6GHz, 12GB RAM, 1TB NVMe SSD, HDMI, Card Reader, Wi-Fi, Bluetooth, Windows 10 Pro

Quick View

Lenovo IdeaPad S340 Notebook, 14" FHD Display, Intel Core i5-1035G1 Upto 3.6GHz, 12GB RAM, 1TB NVMe SSD, HDMI, Card Reader, Wi-Fi, Bluetooth, Windows 10 Pro

Memory: 12 GB
SSD: 1TB
GPU/VPU: Intel UHD Graphics
Brand: Lenovo
Model #: S340i510-121nP

$799^.99 –
Free Shipping

Compare

Lenovo ThinkCentre M70q Gen 5 Tiny, Intel Core i5-14400T 1.5GHz, 16GB DDR4, 1TB NVMe SSD, Windows 11 Pro 64-bit, Internal WiFi

Quick View

Refurbished Lenovo ThinkCentre M70q Gen 5 Tiny, Intel Core i5-14400T 1.5GHz, 16GB DDR4, 1TB NVMe SSD, Windows 11 Pro 64-bit, Internal WiFi

Type: Business Desktops & Workstations
Form Factor: Tiny
CPU Name: Intel Core i5-14400T
Memory Capacity: 16GB DDR4
Model #: J1-M70QG5MA04

$1,209^.99 –
More options from $969.99 - $1,209.99
Free Shipping

Compare

Dell Latitude 7450 7M9WG 14.0-inch LCD Laptop - Core Ultra 7-165U 1.7 GHz - 32 GB LPDDR5X RAM - 512 GB Nvme Solid State Drive - Wi-fi 7 - Win 11 Pro - Titan Gray

Quick View

Refurbished Dell Latitude 7450 7M9WG 14.0-inch LCD Laptop - Core Ultra 7-165U 1.7 GHz - 32 GB LPDDR5X RAM - 512 GB Nvme Solid State Drive - Wi-fi 7 - Win 11 Pro - Titan Gray

Screen Size: 14.0"
Type: Mainstream
Model #: 7M9WG

$999^.99 –
Free Shipping

Compare

Dell Inspiron 15-5570 15.6" Touch 12GB 1TB Core™ i7-8550U 1.8GHz Win10H, Silver

Quick View

Refurbished Dell Inspiron 15-5570 15.6" Touch 12GB 1TB Core™ i7-8550U 1.8GHz Win10H, Silver

Memory: 12GB
GPU/VPU: Integrated Graphics
Brand: DELL
Part Number: i5570-7814SLV-PUS-RB
Model #: i5570-2D-7814SLV-2D-PUS-CR

$445^.99 –
More options from $445.99 - $604.17
Free Shipping

Compare

DELL 12.5" Intel Core i5-6300U 8GB Memory DDR3L 1600 240 SSD Windows 10 E7270

Quick View

Refurbished DELL 12.5" Intel Core i5-6300U 8GB Memory DDR3L 1600 240 SSD Windows 10 E7270

Processor Name: Intel Core i5-6300U
Memory: 8GB
SSD: 240
Brand: DELL
Model #: NE5-31713

$317^.87 –
Free Shipping

Compare

Lenovo ThinkCentre M720q Tiny Desktop - 8th Gen Intel Hexa-Core (6 Cores) i7-8700 up to 4.60 GHz 32 GB DDR4 1TB DVD-R WiFi/BT Windows 11 Pro

Quick View

Refurbished Lenovo ThinkCentre M720q Tiny Desktop - 8th Gen Intel Hexa-Core (6 Cores) i7-8700 up to 4.60 GHz 32 GB DDR4 1TB DVD-R WiFi/BT Windows 11 Pro

Type: Business Desktops & Workstations
Form Factor: Tiny
LAN Speed: 10/100/1000Mbps
Part Number: M720q
Model #: Lenovo.M720q.i7_6

$734^.00 –
More options from $734.00
Free Shipping

Compare

Lenovo M93P-TINY Core i5-4570T 2.9GHz/8GB/500GB HDD/NO_ODD/Win10P64/Refurbished

Quick View

Refurbished Lenovo M93P-TINY Core i5-4570T 2.9GHz/8GB/500GB HDD/NO_ODD/Win10P64/Refurbished

Type: Business Desktops & Workstations
Form Factor: Mini PC
Usage: Business
Color: Black/Silver
Model #: NE3-20724

$419^.99 –
Free Shipping

Compare

Lenovo Desktop M73 (SFF) Computer , Intel Core i5 4th Gen 4570 3.20 Ghz (Upto 3.60 Ghz) 8GB Memory 256GB SSD with -Gaming Keyboard & Mouse- Windows 10 Pro -64 Bit WiFi Adapter

Quick View

Refurbished Lenovo Desktop M73 (SFF) Computer , Intel Core i5 4th Gen 4570 3.20 Ghz (Upto 3.60 Ghz) 8GB Memory 256GB SSD with -Gaming Keyboard & Mouse- Windows 10 Pro -64 Bit WiFi Adapter

Form Factor: Slim/Small Form Factor
WLAN: 802.11g Wireless LAN
Color: Black
Processor Main Features: 64 bit Processor
Model #: Lenovo M73 SFF GAM KEY

$299^.99 –
Free Shipping

Compare

Restored Lenovo M93p/M73 Tiny desktop PC, Core i7-4th Gen Processor, 8GB DDR4 RAM, 256 GB SSD, Keyboard & Mouse, WiFi, Windows 11 Pro (Refurbished)

Quick View

Refurbished Restored Lenovo M93p/M73 Tiny desktop PC, Core i7-4th Gen Processor, 8GB DDR4 RAM, 256 GB SSD, Keyboard & Mouse, WiFi, Windows 11 Pro (Refurbished)

Form Factor: Tiny
Operating System: Windows 11 Pro
Color: Black
Model #:

$214^.44 –
More options from $214.44 - $229.99

Compare

Lenovo M73-TINY Core i5-4570T 2.9GHz/8GB/500GB HDD/NO_ODD/WIn10P64/Refurbished

Quick View

Refurbished Lenovo M73-TINY Core i5-4570T 2.9GHz/8GB/500GB HDD/NO_ODD/WIn10P64/Refurbished

Type: Business Desktops & Workstations
Form Factor: Mini PC
Color: Black/Silver
Monitor: Monitor not included
Model #: NE3-20721

$259^.99 –
Free Shipping

Compare

Restored Lenovo M93p/M73 Tiny desktop PC, Core i7-4th Gen Processor,16GB DDR4 RAM, 256GB SSD, Keyboard & Mouse, 24" LED Monitor, WiFi, Windows 11 Pro (Refurbished)

Quick View

Refurbished Restored Lenovo M93p/M73 Tiny desktop PC, Core i7-4th Gen Processor,16GB DDR4 RAM, 256GB SSD, Keyboard & Mouse, 24" LED Monitor, WiFi, Windows 11 Pro (Refurbished)

Form Factor: Tiny
Operating System: Windows 11 Pro
Color: Black
Model #:

$303^.33 –
More options from $303.33 - $309.99

Compare

Restored Lenovo M93p/M73 Tiny desktop PC, Core i7-4th Gen Processor, 8GB DDR4 RAM, 128 GB SSD, Keyboard & Mouse , WiFi, Windows 11 Pro (Refurbished)

Quick View

Refurbished Restored Lenovo M93p/M73 Tiny desktop PC, Core i7-4th Gen Processor, 8GB DDR4 RAM, 128 GB SSD, Keyboard & Mouse , WiFi, Windows 11 Pro (Refurbished)

Form Factor: Tiny
Operating System: Windows 11 Pro
Color: Black
Model #:

$213^.99 –
More options from $213.99

Compare

Restored Lenovo M93p/M73 Tiny desktop PC, Core i7-4th Gen Processor, 16GB DDR4 RAM, 128GB SSD, Keyboard & Mouse, 22" LED Monitor, WiFi, Windows 11 Pro (Refurbished)

Quick View

Refurbished Restored Lenovo M93p/M73 Tiny desktop PC, Core i7-4th Gen Processor, 16GB DDR4 RAM, 128GB SSD, Keyboard & Mouse, 22" LED Monitor, WiFi, Windows 11 Pro (Refurbished)

Form Factor: Tiny
Operating System: Windows 11 Pro
Color: Black
Model #:

$283^.99 –
More options from $283.99

Compare

Lenovo ThinkCentre M73 SFF /Desktop Grade A Core i5 4th Gen 4570/ 3.20 Ghz (Upto 3.60 Ghz) /8GB Memory 480GB SSD /With /Gaming Keyboard & Mouse / Windows 10 Pro -64 Bit / WiFi Adapter

Quick View

Refurbished Lenovo ThinkCentre M73 SFF /Desktop Grade A Core i5 4th Gen 4570/ 3.20 Ghz (Upto 3.60 Ghz) /8GB Memory 480GB SSD /With /Gaming Keyboard & Mouse / Windows 10 Pro -64 Bit / WiFi Adapter

Form Factor: Slim/Small Form Factor
WLAN: 802.11g Wireless LAN
Color: Black
Processor Main Features: 64 bit Processor
Model #: Lenovo M73 SFF GAM KEY

$299^.99 –
Free Shipping

Compare

Lenovo Business PC desktop M73 SFF computer ; Intel Core i5 - 4570 ; 3.20 Ghz (Upto 3.60 Ghz) ; 8GB Memory 1TB SSD ; Gaming Keyboard & Mouse ; Windows 10 Pro -64 Bit ; WiFi Adapter

Quick View

Refurbished Lenovo Business PC desktop M73 SFF computer ; Intel Core i5 - 4570 ; 3.20 Ghz (Upto 3.60 Ghz) ; 8GB Memory 1TB SSD ; Gaming Keyboard & Mouse ; Windows 10 Pro -64 Bit ; WiFi Adapter

Form Factor: Slim/Small Form Factor
WLAN: 802.11g Wireless LAN
Color: Black
Processor Main Features: 64 bit Processor
Model #: Lenovo M73 SFF GAM KEY

$449^.99 –
Free Shipping

Compare

Lenovo ThinkCentre M720s SFF Desktop - 8th Gen Intel Hexa-Core (6 Cores) i5-8500 up to 4.10 GHz 16 GB DDR4 128 GB SSD DVD-R WiFi/BT Windows 11 Pro

Quick View

Refurbished Lenovo ThinkCentre M720s SFF Desktop - 8th Gen Intel Hexa-Core (6 Cores) i5-8500 up to 4.10 GHz 16 GB DDR4 128 GB SSD DVD-R WiFi/BT Windows 11 Pro

Type: Business Desktops & Workstations
Form Factor: Slim/Small Form Factor
LAN Speed: 10/100/1000Mbps
Part Number: M720s
Model #: Lenovo.M720s.i5_2

$271^.11 –
More options from $260.00 - $271.11

Compare

Lenovo ThinkCentre M73 SFF Core i5-4570 3.20GHz 8GB 500GB SATA Desktop Grade B

Quick View

Refurbished Lenovo ThinkCentre M73 SFF Core i5-4570 3.20GHz 8GB 500GB SATA Desktop Grade B

Monitor: Monitor not included
CPU Type: Intel Core i5 4th Gen
Model #: 764283296016

$289^.99 –
Free Shipping

Compare

Restored Lenovo M93p/M73 Tiny desktop PC, Core i5-4th Gen Processor, 16GB DDR4 RAM, 512GB SSD, 22" LED Monitor, Keyboard & Mouse, WiFi, Windows 11 Pro (Refurbished)

Quick View

Refurbished Restored Lenovo M93p/M73 Tiny desktop PC, Core i5-4th Gen Processor, 16GB DDR4 RAM, 512GB SSD, 22" LED Monitor, Keyboard & Mouse, WiFi, Windows 11 Pro (Refurbished)

Form Factor: Tiny
Operating System: Windows 11 Pro
Color: Black
Model #:

$281^.11 –
More options from $281.11 - $289.99

Compare

Lenovo ThinkCentre M73 SFF /Desktop Grade A Core i5 4th Gen 4570/ 3.20 Ghz (Upto 3.60 Ghz) /8GB Memory 480GB SSD /With /Gaming Keyboard & Mouse / Windows 10 Home -64 Bit / WiFi Adapter

Quick View

Refurbished Lenovo ThinkCentre M73 SFF /Desktop Grade A Core i5 4th Gen 4570/ 3.20 Ghz (Upto 3.60 Ghz) /8GB Memory 480GB SSD /With /Gaming Keyboard & Mouse / Windows 10 Home -64 Bit / WiFi Adapter

Form Factor: Slim/Small Form Factor
WLAN: 802.11g Wireless LAN
Color: Black
Processor Main Features: 64 bit Processor
Model #: Lenovo M73 SFF GAM KEY

$289^.99 –
Free Shipping

Compare

Restored Lenovo M93p/M73 Tiny desktop PC, Core i5-4th Gen Processor, 16GB DDR4 RAM, 256 GB SSD, Keyboard & Mouse, 19" LED Monitor, WiFi, Windows 11 Pro (Refurbished)

Quick View

Refurbished Restored Lenovo M93p/M73 Tiny desktop PC, Core i5-4th Gen Processor, 16GB DDR4 RAM, 256 GB SSD, Keyboard & Mouse, 19" LED Monitor, WiFi, Windows 11 Pro (Refurbished)

Form Factor: Tiny
Operating System: Windows 11 Pro
Color: Black
Model #:

$242^.22 –
More options from $242.22 - $254.99

Compare

Lenovo ThinkCentre M720q Tiny with 22" FHD IPS All In One Desktop - 8th Gen Intel Hexa-Core (6 Cores) i7-8700 up to 4.60 GHz 32 GB DDR4 128 GB M.2 SSD + 1TB SSD DVD-R WiFi/BT Windows 10 Pro

Quick View

Refurbished Lenovo ThinkCentre M720q Tiny with 22" FHD IPS All In One Desktop - 8th Gen Intel Hexa-Core (6 Cores) i7-8700 up to 4.60 GHz 32 GB DDR4 128 GB M.2 SSD + 1TB SSD DVD-R WiFi/BT Windows 10 Pro

Type: All-in-One PC
Form Factor: All-in-One
LAN Speed: 10/100/1000Mbps
Part Number: M720q
Model #: Lenovo.M720q.i7_192

$1,157^.99 –
Free Shipping

Compare

Refurbished Lenovo M710q-Tiny Core i5-6500T 2.5GHz, 16GB, 480GB SSD, Windows 10 Pro (64bit)

Quick View

Refurbished Refurbished Lenovo M710q-Tiny Core i5-6500T 2.5GHz, 16GB, 480GB SSD, Windows 10 Pro (64bit)

Form Factor: Tiny
Color: Black/Silver
Processor: Intel Core i5-6500T 2.50 GHz
Graphics: Intel HD Graphics 530
Model #: NE3-20960

$258^.99 –
More options from $258.99

Compare

Computer Systems