Staples offers $20 Off $100+ Online Orders (exclusions apply) when you apply coupon code 74638 at checkout. Slickdeals Cashback is available for this store (PC extension required, before checkout. See details below). Shipping is free.
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Our research indicates that the Logitech MX Keys for Mac Wireless Keyboard, Space Gray (920-009552) is $12.99 lower (13.9% savings) than the next best available price from a reputable merchant with prices starting from $92.98 at the time of this posting.
Coupon expires 7/14/2021.
Must apply the listed coupon code with required purchase for discount to apply; minimum purchase requirement must be met with purchases to which no other coupon or instant savings offer applies
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Offer valid only on eligible Staples online orders.
Excludes Daily Deals and Auto Restock orders. Additional exclusions apply, see coupon details for the full terms, conditions and exclusions.
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Staples offers $20 Off $100+ Online Orders (exclusions apply) when you apply coupon code 74638 at checkout. Slickdeals Cashback is available for this store (PC extension required, before checkout. See details below). Shipping is free.
Thanks to community member sr71 for finding this deal.
Note, discount will be reflected on the final checkout page.
Example Offers (price after coupon 74638):
Note: Try changing the zip code to a different store location if item displays as out of stock:
Our research indicates that the Logitech MX Keys for Mac Wireless Keyboard, Space Gray (920-009552) is $12.99 lower (13.9% savings) than the next best available price from a reputable merchant with prices starting from $92.98 at the time of this posting.
Coupon expires 7/14/2021.
Must apply the listed coupon code with required purchase for discount to apply; minimum purchase requirement must be met with purchases to which no other coupon or instant savings offer applies
Limit one coupon per customer
Offer valid only on eligible Staples online orders.
Excludes Daily Deals and Auto Restock orders. Additional exclusions apply, see coupon details for the full terms, conditions and exclusions.
Model: CyberPower Intelligent LCD 1500VA UPS, 12-Outlets, Black (CP1500AVRLCD),Size: m
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The idea is to keep the system on during small outages like brownouts, ot to give you & the system time to save files & safely shut down. With a usb cable it can communicate with the system and shut it down / hibernate automatically.
The issue is actually a bit more nuanced than this. Many newer power supplies use active power factor correction (pfc) and ALSO have undersized capacitors to save some $ and meet 80 plus ratings. This means they lose power faster. The simulated sine wave ups units, which are the standard, have a very small window where it switches over from the outlet to battery power. Pure sine wave units, as a side effect of maintaining a better sine wave, have a smaller switchover time.
As an example, I have a new system built with a Seasonic PX850 platinum rated power supply. As far as I know, this unit does not have PFC, but problems can still manifest with ups units. On both my old Cyberpower 850va unit and APC 1500va unit, with a power loss the computer will reboot. On my newer simulated sine wave Cyberpower 1500va units, the system does not reboot and stays up without a hitch. So the age of the ups circuitry (both in technology and degradation) plays a factor here. Finally the secondary pc which uses a Corsair RM850 power supply will stay up fine on the old APC 1500va, showing that my Seasonic is more sensitive, but not enough to require a pure sine wave ups.
This is a great price for this unit, a price point I have paid several times over the last two years. Give it a shot and if your computer reboots when you yank the plug, you have a few options. You could consider replacing your power supply with a better one, this problem is far more common in low quality supplies that use undersized caps. The second would be to use it for your modem/router/network gear. During an outage my router & pihole stay up for 10 hours.
nothing really, some systems with active PFC power supplies won't detect the transition properly and reboot instead of staying up - that's rare nowadays, and usually occurs on older designs.
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Isn't this only an issue when it's on battery power? I feel like most people will turn their systems off during outage and not have it run for extended period of time (it can't anyway, maybe for 10~20mins).
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Our community has rated this post as helpful. If you agree, why not thank sr71
nothing really, some systems with active PFC power supplies won't detect the transition properly and reboot instead of staying up - that's rare nowadays, and usually occurs on older designs.
Our community has rated this post as helpful. If you agree, why not thank TidalWaveOne
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from Meglomaniac
:
What's so bad about this?
Pure sine wave is just "easier on electronics" because they are designed for pure sine wave... and some systems/power supplies might shut-down if not getting a pure sine wave.
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The issue is actually a bit more nuanced than this. Many newer power supplies use active power factor correction (pfc) and ALSO have undersized capacitors to save some $ and meet 80 plus ratings. This means they lose power faster. The simulated sine wave ups units, which are the standard, have a very small window where it switches over from the outlet to battery power. Pure sine wave units, as a side effect of maintaining a better sine wave, have a smaller switchover time.
As an example, I have a new system built with a Seasonic PX850 platinum rated power supply. As far as I know, this unit does not have PFC, but problems can still manifest with ups units. On both my old Cyberpower 850va unit and APC 1500va unit, with a power loss the computer will reboot. On my newer simulated sine wave Cyberpower 1500va units, the system does not reboot and stays up without a hitch. So the age of the ups circuitry (both in technology and degradation) plays a factor here. Finally the secondary pc which uses a Corsair RM850 power supply will stay up fine on the old APC 1500va, showing that my Seasonic is more sensitive, but not enough to require a pure sine wave ups.
This is a great price for this unit, a price point I have paid several times over the last two years. Give it a shot and if your computer reboots when you yank the plug, you have a few options. You could consider replacing your power supply with a better one, this problem is far more common in low quality supplies that use undersized caps. The second would be to use it for your modem/router/network gear. During an outage my router & pihole stay up for 10 hours.
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Our community has rated this post as helpful. If you agree, why not thank gtoviper
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Our community has rated this post as helpful. If you agree, why not thank sr71
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Our community has rated this post as helpful. If you agree, why not thank TidalWaveOne
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